diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index a1bcdce97..c9a1515af 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -314,6 +314,16 @@ SOURCE_GROUP(BLENDER FILES
 	BlenderModifier.cpp
 )
 
+SOURCE_GROUP(IFC FILES
+	IFCLoader.cpp
+	IFCLoader.h
+	IFCReaderGen.cpp
+	IFCReaderGen.h
+	STEPFile.h
+	STEPFileReader.h
+	STEPFileReader.cpp
+)
+
 SOURCE_GROUP( PostProcessing FILES
 	CalcTangentsProcess.cpp
 	CalcTangentsProcess.h
@@ -742,6 +752,13 @@ ADD_LIBRARY( assimp SHARED
 	DeboneProcess.h
 	ColladaExporter.h
 	ColladaExporter.cpp
+	IFCLoader.cpp
+	IFCLoader.h
+	IFCReaderGen.cpp
+	IFCReaderGen.h
+	STEPFile.h
+	STEPFileReader.h
+	STEPFileReader.cpp
 
 	# Necessary to show the headers in the project when using the VC++ generator:
 	BoostWorkaround/boost/math/common_factor_rt.hpp
diff --git a/code/IFCLoader.cpp b/code/IFCLoader.cpp
new file mode 100644
index 000000000..c3e14d68f
--- /dev/null
+++ b/code/IFCLoader.cpp
@@ -0,0 +1,1270 @@
+/*
+Open Asset Import Library (ASSIMP)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2010, ASSIMP Development Team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the ASSIMP team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the ASSIMP Development Team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file  IFC.cpp
+ *  @brief Implementation of the Industry Foundation Classes loader 
+ */
+#include "AssimpPCH.h"
+
+#ifndef ASSIMP_BUILD_NO_IFC_IMPORTER
+
+#include "IFCLoader.h"
+#include "STEPFileReader.h"
+#include "IFCReaderGen.h"
+
+#include "StreamReader.h"
+#include "TinyFormatter.h"
+#include "MemoryIOWrapper.h"
+
+using namespace Assimp;
+using namespace Assimp::Formatter;
+
+namespace EXPRESS = STEP::EXPRESS;
+
+
+/* DO NOT REMOVE this comment block. The genentitylist.sh script
+ * just looks for names adhering to the IFC :: IfcSomething naming scheme
+ * and includes all matches in the whitelist for code-generation. Thus,
+ * all entity classes that are only indirectly referenced need to be
+ * mentioned explicitly.
+
+  IFC::IfcRepresentationMap
+  IFC::IfcProductRepresentation
+  IFC::IfcUnitAssignment
+  IFC::IfcClosedShell
+  IFC::IfcDoor
+
+ */
+
+namespace {
+
+	// helper for std::for_each to delete all heap-allocated items in a container
+template<typename T>
+struct delete_fun
+{
+	void operator()(T* del) {
+		delete del;
+	}
+};
+
+
+	// intermediate data dump during conversion
+struct ConversionData 
+{
+	ConversionData(const STEP::DB& db, const IFC::IfcProject& proj, aiScene* out,const IFCImporter::Settings& settings)
+		: len_scale(1.0)
+		, db(db)
+		, proj(proj)
+		, out(out)
+		, settings(settings)
+	{}
+
+	~ConversionData() {
+		std::for_each(meshes.begin(),meshes.end(),delete_fun<aiMesh>());
+		std::for_each(materials.begin(),materials.end(),delete_fun<aiMaterial>());
+	}
+
+	float len_scale;
+
+	const STEP::DB& db;
+	const IFC::IfcProject& proj;
+	aiScene* out;
+
+	aiMatrix4x4 wcs;
+	std::vector<aiMesh*> meshes;
+	std::vector<aiMaterial*> materials;
+
+	typedef std::map<const IFC::IfcRepresentationItem*, std::vector<unsigned int> > MeshCache;
+	MeshCache cached_meshes;
+
+	const IFCImporter::Settings& settings;
+};
+
+	// helper used during mesh construction
+struct TempMesh
+{
+	std::vector<aiVector3D> verts;
+	std::vector<unsigned int> vertcnt;
+	std::vector<unsigned int> mat_idx;
+
+	aiMesh* ToMesh() {
+		ai_assert(verts.size() == std::accumulate(vertcnt.begin(),vertcnt.end(),0));
+
+		if (verts.empty()) {
+			return NULL;
+		}
+
+		std::auto_ptr<aiMesh> mesh(new aiMesh());
+
+		// copy vertices
+		mesh->mNumVertices = static_cast<unsigned int>(verts.size());
+		mesh->mVertices = new aiVector3D[mesh->mNumVertices];
+		std::copy(verts.begin(),verts.end(),mesh->mVertices);
+
+		// and build up faces
+		mesh->mNumFaces = static_cast<unsigned int>(vertcnt.size());
+		mesh->mFaces = new aiFace[mesh->mNumFaces];
+
+		for(unsigned int i = 0, acc = 0; i < mesh->mNumFaces; ++i) {
+			aiFace& f = mesh->mFaces[i];
+
+			f.mNumIndices = vertcnt[i];
+			f.mIndices = new unsigned int[f.mNumIndices];
+			for(unsigned int a = 0; a < f.mNumIndices; ++a) {
+				f.mIndices[a] = acc++;
+			}
+		}
+
+		// XXX materials
+		mesh->mMaterialIndex = UINT_MAX;
+		return mesh.release();
+	}
+};
+
+
+
+// forward declarations
+float ConvertSIPrefix(const std::string& prefix);
+void SetUnits(ConversionData& conv);
+void ConvertAxisPlacement(aiMatrix4x4& out, const IFC::IfcAxis2Placement& in, ConversionData& conv);
+void SetCoordinateSpace(ConversionData& conv);
+void ProcessSpatialStructures(ConversionData& conv);
+aiNode* ProcessSpatialStructure(aiNode* parent, const IFC::IfcProduct& el ,ConversionData& conv);
+void ProcessProductRepresentation(const IFC::IfcProduct& el, aiNode* nd, ConversionData& conv);
+void MakeTreeRelative(ConversionData& conv);
+
+} // anon
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+IFCImporter::IFCImporter()
+{}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well 
+IFCImporter::~IFCImporter()
+{
+}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file. 
+bool IFCImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const
+{
+	const std::string& extension = GetExtension(pFile);
+	if (extension == "ifc") {
+		return true;
+	}
+
+	else if ((!extension.length() || checkSig) && pIOHandler)	{
+		// note: this is the common identification for STEP-encoded files, so
+		// it is only unambiguous as long as we don't support any further
+		// file formats with STEP as their encoding.
+		const char* tokens[] = {"ISO-10303-21"};
+		return SearchFileHeaderForToken(pIOHandler,pFile,tokens,1);
+	}
+	return false;
+}
+
+// ------------------------------------------------------------------------------------------------
+// List all extensions handled by this loader
+void IFCImporter::GetExtensionList(std::set<std::string>& app) 
+{
+	app.insert("ifc");
+}
+
+
+// ------------------------------------------------------------------------------------------------
+// Setup configuration properties for the loader
+void IFCImporter::SetupProperties(const Importer* pImp)
+{
+	settings.skipSpaceRepresentations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS,true);
+	settings.skipCurveRepresentations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_SKIP_CURVE_REPRESENTATIONS,false);
+}
+
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure. 
+void IFCImporter::InternReadFile( const std::string& pFile, 
+	aiScene* pScene, IOSystem* pIOHandler)
+{
+	boost::shared_ptr<IOStream> stream(pIOHandler->Open(pFile,"rt"));
+	if (!stream) {
+		ThrowException("Could not open file for reading");
+	}
+
+	boost::scoped_ptr<STEP::DB> db(STEP::ReadFileHeader(stream));
+	const STEP::HeaderInfo& head = const_cast<const STEP::DB&>(*db).GetHeader();
+
+	if(!head.fileSchema.size() || head.fileSchema.substr(0,3) != "IFC") {
+		ThrowException("Unrecognized file schema: " + head.fileSchema);
+	}
+
+	if (!DefaultLogger::isNullLogger()) {
+		LogDebug("File schema is \'" + head.fileSchema + '\'');
+		if (head.timestamp.length()) {
+			LogDebug("Timestamp \'" + head.timestamp + '\'');
+		}
+		if (head.app.length()) {
+			LogDebug("Application/Exporter identline is \'" + head.app  + '\'');
+		}
+	}
+
+	// obtain a copy of the machine-generated IFC scheme
+	EXPRESS::ConversionSchema schema;
+	IFC::GetSchema(schema);
+
+	// feed the IFC schema into the reader and pre-parse all lines
+	STEP::ReadFile(*db, schema);
+
+	const STEP::LazyObject* proj =  db->GetObject("ifcproject");
+	if (!proj) {
+		ThrowException("missing IfcProject entity");
+	}
+
+	ConversionData conv(*db,proj->To<IFC::IfcProject>(),pScene,settings);
+	SetUnits(conv);
+	SetCoordinateSpace(conv);
+	ProcessSpatialStructures(conv);
+	MakeTreeRelative(conv);
+
+#ifdef ASSIMP_IFC_TEST
+	db->EvaluateAll();
+#endif
+
+	// do final data copying
+	if (conv.meshes.size()) {
+		pScene->mNumMeshes = static_cast<unsigned int>(conv.meshes.size());
+		pScene->mMeshes = new aiMesh*[pScene->mNumMeshes]();
+		std::copy(conv.meshes.begin(),conv.meshes.end(),pScene->mMeshes);
+
+		// needed to keep the d'tor from burning us
+		conv.meshes.clear();
+	}
+
+	if (conv.materials.size()) {
+		pScene->mNumMaterials = static_cast<unsigned int>(conv.materials.size());
+		pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials]();
+		std::copy(conv.materials.begin(),conv.materials.end(),pScene->mMaterials);
+
+		// needed to keep the d'tor from burning us
+		conv.materials.clear();
+	}
+
+	// apply world coordinate system (which includes the scaling to convert to metres)
+	aiMatrix4x4 scale;
+	aiMatrix4x4::Scaling(aiVector3D(conv.len_scale,conv.len_scale,conv.len_scale),scale);
+	pScene->mRootNode->mTransformation = scale * conv.wcs * pScene->mRootNode->mTransformation;
+
+	// this must be last because objects are evaluated lazily as we process them
+	if ( !DefaultLogger::isNullLogger() ){
+		LogDebug((Formatter::format(),"STEP: evaluated ",db->GetEvaluatedObjectCount()," object records"));
+	}
+}
+
+namespace {
+
+// ------------------------------------------------------------------------------------------------
+bool IsTrue(const EXPRESS::BOOLEAN& in)
+{
+	return (std::string)in == "TRUE" || (std::string)in == "T";
+}
+
+// ------------------------------------------------------------------------------------------------
+float ConvertSIPrefix(const std::string& prefix)
+{
+	if (prefix == "EXA") {
+		return 1e18f;
+	}
+	else if (prefix == "PETA") {
+		return 1e15f;
+	}
+	else if (prefix == "TERA") {
+		return 1e12f;
+	}
+	else if (prefix == "GIGA") {
+		return 1e9f;
+	}
+	else if (prefix == "MEGA") {
+		return 1e6f;
+	}
+	else if (prefix == "KILO") {
+		return 1e3f;
+	}
+	else if (prefix == "HECTO") {
+		return 1e2f;
+	}
+	else if (prefix == "DECA") {
+		return 1e-0f;
+	}
+	else if (prefix == "DECI") {
+		return 1e-1f;
+	}
+	else if (prefix == "CENTI") {
+		return 1e-2f;
+	}
+	else if (prefix == "MILLI") {
+		return 1e-3f;
+	}
+	else if (prefix == "MICRO") {
+		return 1e-6f;
+	}
+	else if (prefix == "NANO") {
+		return 1e-9f;
+	}
+	else if (prefix == "PICO") {
+		return 1e-12f;
+	}
+	else if (prefix == "FEMTO") {
+		return 1e-15f;
+	}
+	else if (prefix == "ATTO") {
+		return 1e-18f;
+	}
+	else {
+		IFCImporter::LogError("Unrecognized SI prefix: " + prefix);
+		return 1;
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void SetUnits(ConversionData& conv)
+{
+	// see if we can determine the coordinate space used to express
+	for(size_t i = 0; i <  conv.proj.UnitsInContext->Units.size(); ++i ) {
+		try {
+			const EXPRESS::ENTITY& e = conv.proj.UnitsInContext->Units[i]->To<IFC::ENTITY>();
+			const IFC::IfcSIUnit& si = conv.db.MustGetObject(e).To<IFC::IfcSIUnit>(); 
+
+			if(si.UnitType == "LENGTHUNIT" && si.Prefix) {
+				conv.len_scale = ConvertSIPrefix(si.Prefix);
+				IFCImporter::LogDebug("got units used for lengths");
+			}
+		}
+		catch(std::bad_cast&) {
+			// not SI unit, not implemented
+			continue;
+		}
+	}
+
+}
+
+// ------------------------------------------------------------------------------------------------
+void ConvertColor(aiColor4D& out, const IFC::IfcColourRgb& in)
+{
+	out.r = in.Red;
+	out.g = in.Green;
+	out.b = in.Blue;
+	out.a = 1.f;
+}
+
+// ------------------------------------------------------------------------------------------------
+void ConvertColor(aiColor4D& out, const IFC::IfcColourOrFactor* in,ConversionData& conv,const aiColor4D* base)
+{
+	if (const EXPRESS::REAL* const r = in->ToPtr<EXPRESS::REAL>()) {
+		out.r = out.g = out.b = *r;
+		if(base) {
+			out.r *= base->r;
+			out.g *= base->g;
+			out.b *= base->b;
+			out.a = base->a;
+		}
+		else out.a = 1.0;
+	}
+	else if (const IFC::IfcColourRgb* const rgb = in->ResolveSelectPtr<IFC::IfcColourRgb>(conv.db)) {
+		ConvertColor(out,*rgb);
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcColourOrFactor entity");
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ConvertCartesianPoint(aiVector3D& out, const IFC::IfcCartesianPoint& in)
+{
+	out = aiVector3D();
+	for(size_t i = 0; i < in.Coordinates.size(); ++i) {
+		out[i] = in.Coordinates[i];
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ConvertDirection(aiVector3D& out, const IFC::IfcDirection& in)
+{
+	out = aiVector3D();
+	for(size_t i = 0; i < in.DirectionRatios.size(); ++i) {
+		out[i] = in.DirectionRatios[i];
+	}
+	const float len = out.Length();
+	if (len<1e-6) {
+		IFCImporter::LogWarn("direction vector too small, normalizing would result in a division by zero");
+		return;
+	}
+	out /= len;
+}
+
+// ------------------------------------------------------------------------------------------------
+void AssignMatrixAxes(aiMatrix4x4& out, const aiVector3D& x, const aiVector3D& y, const aiVector3D& z)
+{
+	out.a1 = x.x;
+	out.b1 = x.y;
+	out.c1 = x.z;
+
+	out.a2 = y.x;
+	out.b2 = y.y;
+	out.c2 = y.z;
+
+	out.a3 = z.x;
+	out.b3 = z.y;
+	out.c3 = z.z;
+}
+
+// ------------------------------------------------------------------------------------------------
+void ConvertAxisPlacement(aiMatrix4x4& out, const IFC::IfcAxis2Placement3D& in, ConversionData& conv)
+{
+	aiVector3D loc;
+	ConvertCartesianPoint(loc,in.Location);
+
+	aiVector3D z(0.f,0.f,1.f),r(0.f,1.f,0.f),x;
+
+	if (in.Axis) { 
+		ConvertDirection(z,*in.Axis.Get());
+	}
+	if (in.RefDirection) {
+		ConvertDirection(r,*in.RefDirection.Get());
+	}
+
+	aiVector3D v = r.Normalize();
+	aiVector3D tmpx = z * (v*z);
+
+	x = (v-tmpx).Normalize();
+	aiVector3D y = (z^x);
+
+	aiMatrix4x4::Translation(loc,out);
+	AssignMatrixAxes(out,x,y,z);
+}
+
+// ------------------------------------------------------------------------------------------------
+void ConvertAxisPlacement(aiMatrix4x4& out, const IFC::IfcAxis2Placement2D& in, ConversionData& conv)
+{
+	aiVector3D loc;
+	ConvertCartesianPoint(loc,in.Location);
+
+	aiVector3D x(1.f,0.f,1.f);
+	if (in.RefDirection) {
+		ConvertDirection(x,*in.RefDirection.Get());
+	}
+
+	const aiVector3D y = aiVector3D(x.y,-x.x,0.f);
+
+	aiMatrix4x4::Translation(loc,out);
+	AssignMatrixAxes(out,x,y,aiVector3D(0.f,0.f,1.f));
+}
+
+// ------------------------------------------------------------------------------------------------
+void ConvertAxisPlacement(aiMatrix4x4& out, const IFC::IfcAxis2Placement& in, ConversionData& conv)
+{
+	if(const IFC::IfcAxis2Placement3D* pl3 = in.ResolveSelectPtr<IFC::IfcAxis2Placement3D>(conv.db)) {
+		ConvertAxisPlacement(out,*pl3,conv);
+	}
+	else if(const IFC::IfcAxis2Placement2D* pl2 = in.ResolveSelectPtr<IFC::IfcAxis2Placement2D>(conv.db)) {
+		ConvertAxisPlacement(out,*pl2,conv);
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcAxis2Placement entity");
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void SetCoordinateSpace(ConversionData& conv)
+{
+	const IFC::IfcRepresentationContext* fav = NULL;
+	BOOST_FOREACH(const IFC::IfcRepresentationContext& v, conv.proj.RepresentationContexts) {
+		fav = &v;
+		// Model should be the most suitable type of context, hence ignore the others 
+		if (v.ContextType && v.ContextType.Get() == "Model") { 
+			break;
+		}
+	}
+	if (fav) {
+		if(const IFC::IfcGeometricRepresentationContext* const geo = fav->ToPtr<IFC::IfcGeometricRepresentationContext>()) {
+			ConvertAxisPlacement(conv.wcs, *geo->WorldCoordinateSystem, conv);
+			IFCImporter::LogDebug("got world coordinate system");
+		}
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ConvertTransformOperator(aiMatrix4x4& out, const IFC::IfcCartesianTransformationOperator& op)
+{
+	aiVector3D loc;
+	ConvertCartesianPoint(loc,op.LocalOrigin);
+
+	aiVector3D x(1.f,0.f,0.f),y(0.f,1.f,0.f),z(0.f,0.f,1.f);
+	if (op.Axis1) {
+		ConvertDirection(x,*op.Axis1.Get());
+	}
+	if (op.Axis2) {
+		ConvertDirection(y,*op.Axis2.Get());
+	}
+	if (const IFC::IfcCartesianTransformationOperator3D* op2 = op.ToPtr<IFC::IfcCartesianTransformationOperator3D>()) {
+		if(op2->Axis3) {
+			ConvertDirection(z,*op2->Axis3.Get());
+		}
+	}
+
+	aiMatrix4x4 locm;
+	aiMatrix4x4::Translation(loc,locm);	
+	AssignMatrixAxes(out,x,y,z);
+
+	const float sc = op.Scale?op.Scale.Get():1.f;
+
+	aiMatrix4x4 s;
+	aiMatrix4x4::Scaling(aiVector3D(sc,sc,sc),s);
+
+	out = locm * out * s;
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessPolyloop(const IFC::IfcPolyLoop& loop, TempMesh& meshout, ConversionData& conv)
+{
+	unsigned int cnt = 0;
+	BOOST_FOREACH(const IFC::IfcCartesianPoint& c, loop.Polygon) {
+		aiVector3D tmp;
+		ConvertCartesianPoint(tmp,c);
+
+		meshout.verts.push_back(tmp);
+		++cnt;
+	}
+	meshout.vertcnt.push_back(cnt);
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessConnectedFaceSet(const IFC::IfcConnectedFaceSet& fset, TempMesh& meshout, ConversionData& conv)
+{
+	BOOST_FOREACH(const IFC::IfcFace& face, fset.CfsFaces) {
+		BOOST_FOREACH(const IFC::IfcFaceBound& bound, face.Bounds) {
+			
+			if(const IFC::IfcPolyLoop* polyloop = bound.Bound->ToPtr<IFC::IfcPolyLoop>()) {
+				ProcessPolyloop(*polyloop, meshout, conv);
+			}
+			else {
+				IFCImporter::LogWarn("skipping unknown IfcFaceBound entity, type is " + bound.Bound->GetClassName());
+				continue;
+			}
+
+			if(!IsTrue(bound.Orientation)) {
+				unsigned int cnt = 0;
+				BOOST_FOREACH(unsigned int& i, meshout.vertcnt) {
+				
+					std::reverse(meshout.verts.begin() + cnt,meshout.verts.begin() + cnt + i);
+					cnt += i;
+				}
+			}
+		}
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessPolyLine(const IFC::IfcPolyline& def, TempMesh& meshout, ConversionData& conv)
+{
+	// this won't produce a valid mesh, it just spits out a list of vertices
+	aiVector3D t;
+	BOOST_FOREACH(const IFC::IfcCartesianPoint& cp, def.Points) {
+		ConvertCartesianPoint(t,cp);
+		meshout.verts.push_back(t);
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessClosedProfile(const IFC::IfcArbitraryClosedProfileDef& def, TempMesh& meshout, ConversionData& conv)
+{
+	if(const IFC::IfcPolyline* poly = def.OuterCurve->ToPtr<IFC::IfcPolyline>()) {
+		ProcessPolyLine(*poly,meshout,conv);
+		if(meshout.verts.size()>2 && meshout.verts.front() == meshout.verts.back()) {
+			meshout.verts.pop_back(); // duplicate element, first==last
+		}
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcArbitraryClosedProfileDef entity, type is " + def.GetClassName());
+		return;
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessOpenProfile(const IFC::IfcArbitraryOpenProfileDef& def, TempMesh& meshout, ConversionData& conv)
+{
+	if(const IFC::IfcPolyline* poly = def.Curve->ToPtr<IFC::IfcPolyline>()) {
+		ProcessPolyLine(*poly,meshout,conv);
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcArbitraryClosedProfileDef entity, type is " + def.GetClassName());
+		return;
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessParametrizedProfile(const IFC::IfcParameterizedProfileDef& def, TempMesh& meshout, ConversionData& conv)
+{
+	if(const IFC::IfcRectangleProfileDef* cprofile = def.ToPtr<IFC::IfcRectangleProfileDef>()) {
+		const float x = cprofile->XDim*0.5f, y = cprofile->YDim*0.5f;
+
+		meshout.verts.reserve(meshout.verts.size()+4);
+		meshout.verts.push_back( aiVector3D( x, y, 0.f ));
+		meshout.verts.push_back( aiVector3D( x,-y, 0.f ));
+		meshout.verts.push_back( aiVector3D(-x,-y, 0.f ));
+		meshout.verts.push_back( aiVector3D(-x, y, 0.f ));
+		meshout.vertcnt.push_back(4);
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcParameterizedProfileDef entity, type is " + def.GetClassName());
+		return;
+	}
+
+	aiMatrix4x4 trafo;
+	ConvertAxisPlacement(trafo, *def.Position,conv);
+
+	BOOST_FOREACH(aiVector3D& v, meshout.verts) {
+		v *= trafo;
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessExtrudedAreaSolid(const IFC::IfcExtrudedAreaSolid& solid, TempMesh& result, ConversionData& conv)
+{
+	TempMesh meshout;
+	if(const IFC::IfcArbitraryClosedProfileDef* cprofile = solid.SweptArea->ToPtr<IFC::IfcArbitraryClosedProfileDef>()) {
+		ProcessClosedProfile(*cprofile,meshout,conv);
+	}
+	else if(const IFC::IfcArbitraryOpenProfileDef* copen = solid.SweptArea->ToPtr<IFC::IfcArbitraryOpenProfileDef>()) {
+		ProcessOpenProfile(*copen,meshout,conv);
+	}
+	else if(const IFC::IfcParameterizedProfileDef* cparam = solid.SweptArea->ToPtr<IFC::IfcParameterizedProfileDef>()) {
+		ProcessParametrizedProfile(*cparam,meshout,conv);
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcProfileDef entity, type is " + solid.SweptArea->GetClassName());
+		return;
+	}
+
+	if(meshout.verts.size()<=1) {
+		return;
+	}
+
+	aiVector3D dir;
+	ConvertDirection(dir,solid.ExtrudedDirection);
+
+	dir *= solid.Depth;
+
+	// assuming that `meshout.verts` is now a list of vertex points forming 
+	// the underlying profile, extrude along the given axis, forming new
+	// triangles.
+	
+	const std::vector<aiVector3D>& in = meshout.verts;
+	const size_t size=in.size();
+
+	const bool has_area = solid.SweptArea->ProfileType == "AREA" && size>2;
+
+	result.verts.reserve(size*(has_area?4:2));
+	result.vertcnt.reserve(meshout.vertcnt.size()+2);
+
+	for(size_t i = 0; i < size; ++i) {
+		const size_t next = (i+1)%size;
+
+		result.vertcnt.push_back(4);
+
+		result.verts.push_back(in[i]);
+		result.verts.push_back(in[next]);
+		result.verts.push_back(in[next]+dir);
+		result.verts.push_back(in[i]+dir);
+	}
+
+	if(has_area) {
+		// leave the triangulation of the profile area to the ear cutting 
+		// implementation in aiProcess_Triangulate - for now we just
+		// feed in a possibly huge polygon.
+		for(size_t i = 0; i < size; ++i) {
+			result.verts.push_back(in[i]);
+		}
+		for(size_t i = 0; i < size; ++i) {
+			result.verts.push_back(in[i]+dir);
+		}
+		result.vertcnt.push_back(size);
+		result.vertcnt.push_back(size);
+	}
+
+	aiMatrix4x4 trafo;
+	ConvertAxisPlacement(trafo, solid.Position,conv);
+
+	BOOST_FOREACH(aiVector3D& v, result.verts) {
+		v *= trafo;
+	}
+
+	IFCImporter::LogDebug("generate mesh procedurally by extrusion (IfcExtrudedAreaSolid)");
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessSweptAreaSolid(const IFC::IfcSweptAreaSolid& swept, TempMesh& meshout, ConversionData& conv)
+{
+	if(const IFC::IfcExtrudedAreaSolid* solid = swept.ToPtr<IFC::IfcExtrudedAreaSolid>()) {
+		ProcessExtrudedAreaSolid(*solid,meshout,conv);
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcSweptAreaSolid entity, type is " + swept.GetClassName());
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessBoolean(const IFC::IfcBooleanResult& boolean, TempMesh& meshout, ConversionData& conv)
+{
+	if(const IFC::IfcBooleanClippingResult* const clip = boolean.ToPtr<IFC::IfcBooleanClippingResult>()) {
+		if(const IFC::IfcBooleanResult* const op0 = clip->FirstOperand->ResolveSelectPtr<IFC::IfcBooleanResult>(conv.db)) {
+			ProcessBoolean(*op0,meshout,conv);
+		}
+		else if (const IFC::IfcSweptAreaSolid* const swept = clip->FirstOperand->ResolveSelectPtr<IFC::IfcSweptAreaSolid>(conv.db)) {
+			//ProcessSweptAreaSolid(*swept,meshout,conv);
+			// XXX
+		}
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcBooleanResult entity, type is " + boolean.GetClassName());
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+int ConvertShadingMode(const std::string& name)
+{
+	if (name == "BLINN") {
+		return aiShadingMode_Blinn;
+	}
+	else if (name == "FLAT" || name == "NOTDEFINED") {
+		return aiShadingMode_NoShading;
+	}
+	else if (name == "PHONG") {
+		return aiShadingMode_Phong;
+	}
+	IFCImporter::LogWarn("shading mode "+name+" not recognized by Assimp, using Phong instead");
+	return aiShadingMode_Phong;
+}
+
+// ------------------------------------------------------------------------------------------------
+unsigned int ProcessMaterials(const IFC::IfcRepresentationItem& item, ConversionData& conv)
+{
+	aiString name;
+	aiColor4D col;
+
+	if (conv.materials.empty()) {
+		std::auto_ptr<MaterialHelper> mat(new MaterialHelper());
+
+		name.Set("<IFCDefault>");
+		mat->AddProperty(&name,AI_MATKEY_NAME);
+
+		col = aiColor4D(0.6f,0.6f,0.6f,1.0f);
+		mat->AddProperty(&col,1, AI_MATKEY_COLOR_DIFFUSE);
+
+		conv.materials.push_back(mat.release());
+	}
+
+	STEP::DB::RefMapRange range = conv.db.GetRefs().equal_range(item.GetID());
+	for(;range.first != range.second; ++range.first) {
+		if(const IFC::IfcStyledItem* const styled = conv.db.GetObject((*range.first).second)->ToPtr<IFC::IfcStyledItem>()) {
+			BOOST_FOREACH(const IFC::IfcPresentationStyleAssignment& as, styled->Styles) {
+				BOOST_FOREACH(const IFC::IfcPresentationStyleSelect* sel, as.Styles) {
+			
+					if (const IFC::IfcSurfaceStyle* surf =  sel->ResolveSelectPtr<IFC::IfcSurfaceStyle>(conv.db)) {
+						const std::string side = static_cast<std::string>(surf->Side);
+						if (side != "BOTH") {
+							IFCImporter::LogWarn("ignoring surface side marker on IFC::IfcSurfaceStyle: " + side);
+						}
+
+						std::auto_ptr<MaterialHelper> mat(new MaterialHelper());
+
+						name.Set((surf->Name? surf->Name.Get() : "IfcSurfaceStyle_Unnamed"));
+						mat->AddProperty(&name,AI_MATKEY_NAME);
+
+						// now see which kinds of surface information are present
+						BOOST_FOREACH(const IFC::IfcSurfaceStyleElementSelect* sel2, surf->Styles) {
+
+							if (const IFC::IfcSurfaceStyleShading* shade = sel2->ResolveSelectPtr<IFC::IfcSurfaceStyleShading>(conv.db)) {
+								aiColor4D col_base;
+
+								ConvertColor(col_base, shade->SurfaceColour);
+								mat->AddProperty(&col,1, AI_MATKEY_COLOR_DIFFUSE);
+
+								if (const IFC::IfcSurfaceStyleRendering* ren = shade->ToPtr<IFC::IfcSurfaceStyleRendering>()) {
+									
+									if (ren->DiffuseColour) {
+										ConvertColor(col, ren->DiffuseColour.Get(),conv,&col_base);
+										mat->AddProperty(&col,1, AI_MATKEY_COLOR_DIFFUSE);
+									}
+
+									if (ren->SpecularColour) {
+										ConvertColor(col, ren->SpecularColour.Get(),conv,&col_base);
+										mat->AddProperty(&col,1, AI_MATKEY_COLOR_SPECULAR);
+									}
+
+									if (ren->TransmissionColour) {
+										ConvertColor(col, ren->TransmissionColour.Get(),conv,&col_base);
+										mat->AddProperty(&col,1, AI_MATKEY_COLOR_TRANSPARENT);
+									}
+
+									if (ren->ReflectionColour) {
+										ConvertColor(col, ren->ReflectionColour.Get(),conv,&col_base);
+										mat->AddProperty(&col,1, AI_MATKEY_COLOR_REFLECTIVE);
+									}
+
+									const int shading = (ren->SpecularHighlight && ren->SpecularColour)?ConvertShadingMode(ren->ReflectanceMethod):aiShadingMode_Gouraud;
+									mat->AddProperty(&shading,1, AI_MATKEY_SHADING_MODEL);
+
+									if (ren->SpecularHighlight) {
+										if(const EXPRESS::REAL* rt = ren->SpecularHighlight.Get()->ToPtr<EXPRESS::REAL>()) {
+											// at this point we don't distinguish between the two distinct ways of
+											// specifying highlight intensities. leave this to the user.
+											const float e = *rt;
+											mat->AddProperty(&e,1,AI_MATKEY_SHININESS);
+										}
+										else {
+											IFCImporter::LogWarn("unexpected type error, SpecularHighlight should be a REAL");
+										}
+									}
+								}
+							}
+							else if (const IFC::IfcSurfaceStyleWithTextures* tex = sel2->ResolveSelectPtr<IFC::IfcSurfaceStyleWithTextures>(conv.db)) {
+								// XXX
+							}
+						}
+
+						conv.materials.push_back(mat.release());
+						return conv.materials.size()-1;
+					}
+				}
+			}
+		}
+	}
+	return 0;
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessTopologicalItem(const IFC::IfcTopologicalRepresentationItem& topo, std::vector<unsigned int>& mesh_indices, ConversionData& conv)
+{
+	TempMesh meshtmp;
+	if(const IFC::IfcConnectedFaceSet* fset = topo.ToPtr<IFC::IfcConnectedFaceSet>()) {
+		ProcessConnectedFaceSet(*fset,meshtmp,conv);
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcTopologicalRepresentationItem entity, type is " + topo.GetClassName());
+		return;
+	}
+
+	aiMesh* const mesh = meshtmp.ToMesh();
+	if(mesh) {
+		mesh->mMaterialIndex = ProcessMaterials(topo,conv);
+		mesh_indices.push_back(conv.meshes.size());
+		conv.meshes.push_back(mesh);
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessGeometricItem(const IFC::IfcGeometricRepresentationItem& geo, std::vector<unsigned int>& mesh_indices, ConversionData& conv)
+{
+	TempMesh meshtmp;
+	if(const IFC::IfcShellBasedSurfaceModel* shellmod = geo.ToPtr<IFC::IfcShellBasedSurfaceModel>()) {
+		BOOST_FOREACH(const IFC::IfcShell* shell,shellmod->SbsmBoundary) {
+			try {
+				const EXPRESS::ENTITY& e = shell->To<IFC::ENTITY>();
+				const IFC::IfcConnectedFaceSet& fs = conv.db.MustGetObject(e).To<IFC::IfcConnectedFaceSet>(); 
+
+				ProcessConnectedFaceSet(fs,meshtmp,conv);
+			}
+			catch(std::bad_cast&) {
+				IFCImporter::LogWarn("unexpected type error, IfcShell ought to inherit from IfcConnectedFaceSet");
+				continue;
+			}
+		}
+	}
+	else if(const IFC::IfcSweptAreaSolid* swept = geo.ToPtr<IFC::IfcSweptAreaSolid>()) {
+		ProcessSweptAreaSolid(*swept,meshtmp,conv);
+	}
+	else if(const IFC::IfcManifoldSolidBrep* brep = geo.ToPtr<IFC::IfcManifoldSolidBrep>()) {
+		ProcessConnectedFaceSet(brep->Outer,meshtmp,conv);
+	}
+	else if(const IFC::IfcBooleanResult* boolean = geo.ToPtr<IFC::IfcBooleanResult>()) {
+		ProcessBoolean(*boolean,meshtmp,conv);
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcGeometricRepresentationItem entity, type is " + geo.GetClassName());
+		return;
+	}
+
+	aiMesh* const mesh = meshtmp.ToMesh();
+
+	if(mesh) {
+		mesh->mMaterialIndex = ProcessMaterials(geo,conv);
+		mesh_indices.push_back(conv.meshes.size());
+		conv.meshes.push_back(mesh);
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void AssignAddedMeshes(std::vector<unsigned int>& mesh_indices,aiNode* nd,ConversionData& conv)
+{
+	if (!mesh_indices.empty()) {
+
+		// make unique
+		std::sort(mesh_indices.begin(),mesh_indices.end());
+		std::vector<unsigned int>::iterator it_end = std::unique(mesh_indices.begin(),mesh_indices.end());
+		
+		const size_t size = std::distance(mesh_indices.begin(),it_end);
+
+		nd->mNumMeshes = size;
+		nd->mMeshes = new unsigned int[nd->mNumMeshes];
+		for(unsigned int i = 0; i < nd->mNumMeshes; ++i) {
+			nd->mMeshes[i] = mesh_indices[i];
+		}
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+bool TryQueryMeshCache(const IFC::IfcRepresentationItem& item, std::vector<unsigned int>& mesh_indices, ConversionData& conv) 
+{
+	ConversionData::MeshCache::const_iterator it = conv.cached_meshes.find(&item);
+	if (it != conv.cached_meshes.end()) {
+		std::copy((*it).second.begin(),(*it).second.end(),std::back_inserter(mesh_indices));
+		return true;
+	}
+	return false;
+}
+
+// ------------------------------------------------------------------------------------------------
+void PopulateMeshCache(const IFC::IfcRepresentationItem& item, const std::vector<unsigned int>& mesh_indices, ConversionData& conv)
+{
+	conv.cached_meshes[&item] = mesh_indices;
+}
+
+// ------------------------------------------------------------------------------------------------
+bool ProcessRepresentationItem(const IFC::IfcRepresentationItem& item, std::vector<unsigned int>& mesh_indices, ConversionData& conv)
+{
+	// XXX should we make a choice? handle only one of them?
+	if(const IFC::IfcTopologicalRepresentationItem* const topo = item.ToPtr<IFC::IfcTopologicalRepresentationItem>()) {
+		if (!TryQueryMeshCache(item,mesh_indices,conv)) {
+			ProcessTopologicalItem(*topo,mesh_indices,conv);
+			PopulateMeshCache(item,mesh_indices,conv);
+		}
+		
+	}
+	else if(const IFC::IfcGeometricRepresentationItem* const geo = item.ToPtr<IFC::IfcGeometricRepresentationItem>()) {
+		if (!TryQueryMeshCache(item,mesh_indices,conv)) {
+			ProcessGeometricItem(*geo,mesh_indices,conv);	
+			PopulateMeshCache(item,mesh_indices,conv);
+		}
+	}
+	else {
+		return false;
+	}
+
+	return true;
+}
+
+// ------------------------------------------------------------------------------------------------
+void ResolveObjectPlacement(aiMatrix4x4& m, const IFC::IfcObjectPlacement& place, ConversionData& conv)
+{
+	if (const IFC::IfcLocalPlacement* const local = place.ToPtr<IFC::IfcLocalPlacement>()){
+		ConvertAxisPlacement(m, *local->RelativePlacement, conv);
+
+		if (local->PlacementRelTo) {
+			aiMatrix4x4 tmp;
+			ResolveObjectPlacement(tmp,local->PlacementRelTo.Get(),conv);
+			m = tmp * m;
+		}
+	}
+	else {
+		IFCImporter::LogWarn("skipping unknown IfcObjectPlacement entity, type is " + place.GetClassName());
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void GetAbsTransform(aiMatrix4x4& out, const aiNode* nd, ConversionData& conv)
+{
+	aiMatrix4x4 t;
+	if (nd->mParent) {
+		GetAbsTransform(t,nd->mParent,conv);
+	}
+	out = t*nd->mTransformation;
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessMappedItem(const IFC::IfcMappedItem& mapped, aiNode* nd_src, std::vector< aiNode* >& subnodes_src, ConversionData& conv)
+{
+	// insert a custom node here, the cartesian transform operator is simply a conventional transformation matrix
+	std::auto_ptr<aiNode> nd(new aiNode());
+	nd->mName.Set("MappedItem");
+	
+	std::vector<unsigned int> meshes;
+
+	const IFC::IfcRepresentation& repr = mapped.MappingSource->MappedRepresentation;
+	BOOST_FOREACH(const IFC::IfcRepresentationItem& item, repr.Items) {
+		if(!ProcessRepresentationItem(item,meshes,conv)) {
+			IFCImporter::LogWarn("skipping unknown IfcMappedItem entity, type is " + item.GetClassName());
+		}
+	}
+	AssignAddedMeshes(meshes,nd.get(),conv);
+		
+	// handle the cartesian operator
+	aiMatrix4x4 m;
+	ConvertTransformOperator(m, *mapped.MappingTarget);
+
+	aiMatrix4x4 msrc;
+	ConvertAxisPlacement(msrc,*mapped.MappingSource->MappingOrigin,conv);
+
+	aiMatrix4x4 minv = msrc;
+	minv.Inverse();
+
+	//aiMatrix4x4 correct;
+	//GetAbsTransform(correct,nd_src,conv);
+
+	nd->mTransformation = nd_src->mTransformation * minv * m * msrc;
+	subnodes_src.push_back(nd.release());
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessProductRepresentation(const IFC::IfcProduct& el, aiNode* nd, std::vector< aiNode* >& subnodes, ConversionData& conv)
+{
+	if(!el.Representation) {
+		return;
+	}
+
+	if(conv.settings.skipSpaceRepresentations) {
+		if(const IFC::IfcSpace* const space = el.ToPtr<IFC::IfcSpace>()) {
+			IFCImporter::LogWarn("skipping space representation due to importer settings");
+			return;
+		}
+	}
+
+	std::vector<unsigned int> meshes;
+	
+	BOOST_FOREACH(const IFC::IfcRepresentation& repr, el.Representation.Get()->Representations) {
+		if (conv.settings.skipCurveRepresentations && repr.RepresentationType && repr.RepresentationType.Get() == "Curve2D") {
+			IFCImporter::LogWarn("skipping Curve2D representation item due to importer settings");
+			return;
+		}
+		BOOST_FOREACH(const IFC::IfcRepresentationItem& item, repr.Items) {
+			if(!ProcessRepresentationItem(item,meshes,conv)) {
+				if(const IFC::IfcMappedItem* const geo = item.ToPtr<IFC::IfcMappedItem>()) {
+					ProcessMappedItem(*geo,nd,subnodes,conv);			
+				}
+				else {
+					IFCImporter::LogWarn("skipping unknown IfcRepresentationItem entity, type is " + item.GetClassName());
+				}
+			}
+		}
+	}
+
+	AssignAddedMeshes(meshes,nd,conv);
+}
+
+// ------------------------------------------------------------------------------------------------
+aiNode* ProcessSpatialStructure(aiNode* parent, const IFC::IfcProduct& el, ConversionData& conv)
+{
+	const STEP::DB::RefMap& refs = conv.db.GetRefs();
+
+	// add an output node for this spatial structure
+	std::auto_ptr<aiNode> nd(new aiNode());
+	nd->mName.Set(el.GetClassName()+"_"+(el.Name?el.Name:el.GlobalId));
+	nd->mParent = parent;
+
+	if(el.ObjectPlacement) {
+		ResolveObjectPlacement(nd->mTransformation,el.ObjectPlacement.Get(),conv);
+	}
+
+	// convert everything contained directly within this structure,
+	// this may result in more nodes.
+	std::vector< aiNode* > subnodes;
+	try {
+
+		ProcessProductRepresentation(el,nd.get(),subnodes,conv);
+
+		// locate aggregates and 'contained-in-here'-elements of this spatial structure and add them in recursively
+		STEP::DB::RefMapRange range = refs.equal_range(el.GetID());
+
+		for(STEP::DB::RefMapRange range2=range;range2.first != range.second; ++range2.first) {
+			if(const IFC::IfcRelContainedInSpatialStructure* const cont = conv.db.GetObject((*range2.first).second)->
+				ToPtr<IFC::IfcRelContainedInSpatialStructure>()) {
+				
+				BOOST_FOREACH(const IFC::IfcProduct& pro, cont->RelatedElements) {		
+					subnodes.push_back( ProcessSpatialStructure(nd.get(),pro,conv) );
+				}
+				break;
+			}
+		}
+
+		for(;range.first != range.second; ++range.first) {
+			if(const IFC::IfcRelAggregates* const aggr = conv.db.GetObject((*range.first).second)->ToPtr<IFC::IfcRelAggregates>()) {
+
+				// move aggregate elements to a separate node since they are semantically different than elements that are merely 'contained'
+				std::auto_ptr<aiNode> nd_aggr(new aiNode());
+				nd_aggr->mName.Set("$Aggregates");
+				nd_aggr->mParent = nd.get();
+
+				nd_aggr->mChildren = new aiNode*[aggr->RelatedObjects.size()]();
+				BOOST_FOREACH(const IFC::IfcObjectDefinition& def, aggr->RelatedObjects) {
+					if(const IFC::IfcProduct* const prod = def.ToPtr<IFC::IfcProduct>()) {
+						nd_aggr->mChildren[nd_aggr->mNumChildren++] = ProcessSpatialStructure(nd_aggr.get(),*prod,conv);
+					}
+				}
+			
+				subnodes.push_back( nd_aggr.release() );
+				break;
+			}
+		}
+
+		if (subnodes.size()) {
+			nd->mChildren = new aiNode*[subnodes.size()]();
+			BOOST_FOREACH(aiNode* nd2, subnodes) {
+				nd->mChildren[nd->mNumChildren++] = nd2;
+				nd2->mParent = nd.get();
+			}
+		}
+	}
+	catch(...) {
+		// it hurts, but I don't want to pull boost::ptr_vector into -noboost only for these few spots here
+		std::for_each(subnodes.begin(),subnodes.end(),delete_fun<aiNode>());
+		throw;
+	}
+
+	return nd.release();
+}
+
+// ------------------------------------------------------------------------------------------------
+void ProcessSpatialStructures(ConversionData& conv)
+{
+	// process all products in the file. it is reasonable to assume that a
+	// file that is relevant for us contains at least a site or a building.
+	const STEP::DB::ObjectMapByType& map = conv.db.GetObjectsByType();
+	STEP::DB::ObjectMapRange range = map.equal_range("ifcsite");
+
+	if (range.first == map.end()) {
+		range = map.equal_range("ifcbuilding");
+		if (range.first == map.end()) {
+			// no site, no building - try all ids. this will take ages, but it should rarely happen.
+			range = STEP::DB::ObjectMapRange(map.begin(),map.end());
+		}
+	}
+
+	for(;range.first != range.second; ++range.first) {
+		const IFC::IfcSpatialStructureElement* const prod = (*range.first).second->ToPtr<IFC::IfcSpatialStructureElement>();
+		if(!prod) {
+			continue;
+		}
+		IFCImporter::LogDebug("looking at spatial structure `" + (prod->Name ? prod->Name.Get() : "unnamed") + "`" + (prod->ObjectType? " which is of type " + prod->ObjectType.Get():""));
+	
+		// the primary site is referenced by an IFCRELAGGREGATES element which assigns it to the IFCPRODUCT
+		const STEP::DB::RefMap& refs = conv.db.GetRefs();
+		STEP::DB::RefMapRange range = refs.equal_range(conv.proj.GetID());
+		for(;range.first != range.second; ++range.first) {
+			if(const IFC::IfcRelAggregates* const aggr = conv.db.GetObject((*range.first).second)->ToPtr<IFC::IfcRelAggregates>()) {
+			
+				BOOST_FOREACH(const IFC::IfcObjectDefinition& def, aggr->RelatedObjects) {
+					// comparing pointer values is not sufficient, we would need to cast them to the same type first
+					// as there is multiple inheritance in the game.
+					if (def.GlobalId == prod->GlobalId) { 
+						IFCImporter::LogDebug("selecting this spatial structure as root structure");
+						// got it, this is the primary site.
+						conv.out->mRootNode = ProcessSpatialStructure(NULL,*prod,conv);
+						return;
+					}
+				}
+
+			}
+		}
+	}
+	IFCImporter::ThrowException("Failed to determine primary site element");
+}
+
+// ------------------------------------------------------------------------------------------------
+void MakeTreeRelative(aiNode* start, const aiMatrix4x4& combined)
+{
+	// combined is the parent's absolute transformation matrix
+	aiMatrix4x4 old = start->mTransformation;
+
+	if (!combined.IsIdentity()) {
+		start->mTransformation = aiMatrix4x4(combined).Inverse() * start->mTransformation;
+	}
+
+	// All nodes store absolute transformations right now, so we need to make them relative
+	for (unsigned int i = 0; i < start->mNumChildren; ++i) {
+		MakeTreeRelative(start->mChildren[i],old);
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+void MakeTreeRelative(ConversionData& conv)
+{
+	MakeTreeRelative(conv.out->mRootNode,aiMatrix4x4());
+}
+
+} // !anon
+
+// ------------------------------------------------------------------------------------------------
+/*static*/ void IFCImporter::ThrowException(const std::string& msg)
+{
+	throw DeadlyImportError("IFC: "+msg);
+}
+
+// ------------------------------------------------------------------------------------------------
+/*static*/ void IFCImporter::LogWarn(const Formatter::format& message)	{
+	DefaultLogger::get()->warn(std::string("IFC: ")+=message);
+}
+
+// ------------------------------------------------------------------------------------------------
+/*static*/ void IFCImporter::LogError(const Formatter::format& message)	{
+	DefaultLogger::get()->error(std::string("IFC: ")+=message);
+}
+
+// ------------------------------------------------------------------------------------------------
+/*static*/ void IFCImporter::LogInfo(const Formatter::format& message)	{
+	DefaultLogger::get()->info(std::string("IFC: ")+=message);
+}
+
+// ------------------------------------------------------------------------------------------------
+/*static*/ void IFCImporter::LogDebug(const Formatter::format& message)	{
+	DefaultLogger::get()->debug(std::string("IFC: ")+=message);
+}
+
+
+#endif
diff --git a/code/IFCLoader.h b/code/IFCLoader.h
new file mode 100644
index 000000000..6afac72a0
--- /dev/null
+++ b/code/IFCLoader.h
@@ -0,0 +1,141 @@
+/*
+Open Asset Import Library (ASSIMP)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2010, ASSIMP Development Team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the ASSIMP team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the ASSIMP Development Team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file  IFC.h
+ *  @brief Declaration of the Industry Foundation Classes (IFC) loader main class
+ */
+#ifndef INCLUDED_AI_IFC_LOADER_H
+#define INCLUDED_AI_IFC_LOADER_H
+
+#include "BaseImporter.h"
+namespace Assimp	{
+	
+	// TinyFormatter.h
+	namespace Formatter {
+		template <typename T,typename TR, typename A> class basic_formatter;
+		typedef class basic_formatter< char, std::char_traits<char>, std::allocator<char> > format;
+	}
+
+	namespace STEP {
+		class DB;
+	}
+
+
+// -------------------------------------------------------------------------------------------
+/** Load the IFC format, which is an open specification to describe building and construction
+    industry data.
+
+ See http://en.wikipedia.org/wiki/Industry_Foundation_Classes
+*/
+// -------------------------------------------------------------------------------------------
+class IFCImporter : public BaseImporter
+{
+	friend class Importer;
+
+protected:
+
+	/** Constructor to be privately used by Importer */
+	IFCImporter();
+
+	/** Destructor, private as well */
+	~IFCImporter();
+
+public:
+
+	// --------------------
+	bool CanRead( const std::string& pFile, 
+		IOSystem* pIOHandler,
+		bool checkSig
+	) const;
+
+protected:
+
+	// --------------------
+	void GetExtensionList(std::set<std::string>& app);
+
+	// --------------------
+	void SetupProperties(const Importer* pImp);
+
+	// --------------------
+	void InternReadFile( const std::string& pFile, 
+		aiScene* pScene, 
+		IOSystem* pIOHandler
+	);
+
+private:
+
+
+public: 
+
+
+	// loader settings, publicy accessible via their corresponding AI_CONFIG constants
+	struct Settings 
+	{
+		Settings()
+			: skipSpaceRepresentations()
+			, skipCurveRepresentations()
+		{}
+
+
+		bool skipSpaceRepresentations;
+		bool skipCurveRepresentations;
+	};
+
+public:
+	
+	// -------------------------------------------------------------------
+	/** Prepend 'IFC: ' and throw msg.*/
+	static void ThrowException(const std::string& msg);
+
+	// -------------------------------------------------------------------
+	/** @defgroup blog Prepend 'IFC: ' and write @c message to log.*/
+	static void LogWarn  (const Formatter::format& message); //! @ingroup blog
+	static void LogError (const Formatter::format& message); //! @ingroup blog
+	static void LogInfo  (const Formatter::format& message); //! @ingroup blog
+	static void LogDebug (const Formatter::format& message); //! @ingroup blog
+
+private:
+
+	Settings settings;
+
+}; // !class IFCImporter
+
+} // end of namespace Assimp
+#endif // !INCLUDED_AI_IFC_LOADER_H
diff --git a/code/IFCReaderGen.cpp b/code/IFCReaderGen.cpp
new file mode 100644
index 000000000..3123125d4
--- /dev/null
+++ b/code/IFCReaderGen.cpp
@@ -0,0 +1,4480 @@
+/*
+Open Asset Import Library (ASSIMP)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2010, ASSIMP Development Team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the ASSIMP team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the ASSIMP Development Team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** MACHINE-GENERATED by scripts/ICFImporter/CppGenerator.py */
+
+#include "AssimpPCH.h"
+#ifndef ASSIMP_BUILD_NO_IFC_IMPORTER
+
+#include "IFCReaderGen.h"
+
+namespace Assimp {
+using namespace IFC;
+
+namespace {
+
+	typedef EXPRESS::ConversionSchema::SchemaEntry SchemaEntry;
+	const SchemaEntry schema_raw[] =  {
+		SchemaEntry("ifcsoundpowermeasure",NULL )
+,		SchemaEntry("ifcdoorstyleoperationenum",NULL )
+,		SchemaEntry("ifcrotationalfrequencymeasure",NULL )
+,		SchemaEntry("ifccharacterstyleselect",NULL )
+,		SchemaEntry("ifcelectrictimecontroltypeenum",NULL )
+,		SchemaEntry("ifcairterminaltypeenum",NULL )
+,		SchemaEntry("ifcprojectordertypeenum",NULL )
+,		SchemaEntry("ifcsequenceenum",NULL )
+,		SchemaEntry("ifcspecificheatcapacitymeasure",NULL )
+,		SchemaEntry("ifcheatingvaluemeasure",NULL )
+,		SchemaEntry("ifcribplatedirectionenum",NULL )
+,		SchemaEntry("ifcsensortypeenum",NULL )
+,		SchemaEntry("ifcelectricheatertypeenum",NULL )
+,		SchemaEntry("ifcobjectiveenum",NULL )
+,		SchemaEntry("ifctextstyleselect",NULL )
+,		SchemaEntry("ifccolumntypeenum",NULL )
+,		SchemaEntry("ifcgasterminaltypeenum",NULL )
+,		SchemaEntry("ifcmassdensitymeasure",NULL )
+,		SchemaEntry("ifcsimplevalue",NULL )
+,		SchemaEntry("ifcelectricconductancemeasure",NULL )
+,		SchemaEntry("ifcbuildingelementproxytypeenum",NULL )
+,		SchemaEntry("ifcjunctionboxtypeenum",NULL )
+,		SchemaEntry("ifcmodulusofelasticitymeasure",NULL )
+,		SchemaEntry("ifcactionsourcetypeenum",NULL )
+,		SchemaEntry("ifcsiunitname",NULL )
+,		SchemaEntry("ifcrotationalmassmeasure",NULL )
+,		SchemaEntry("ifcmembertypeenum",NULL )
+,		SchemaEntry("ifctextdecoration",NULL )
+,		SchemaEntry("ifcpositivelengthmeasure",NULL )
+,		SchemaEntry("ifcamountofsubstancemeasure",NULL )
+,		SchemaEntry("ifcdoorstyleconstructionenum",NULL )
+,		SchemaEntry("ifcangularvelocitymeasure",NULL )
+,		SchemaEntry("ifcdirectionsenseenum",NULL )
+,		SchemaEntry("ifcnullstyle",NULL )
+,		SchemaEntry("ifcmonthinyearnumber",NULL )
+,		SchemaEntry("ifcrampflighttypeenum",NULL )
+,		SchemaEntry("ifcwindowstyleoperationenum",NULL )
+,		SchemaEntry("ifccurvaturemeasure",NULL )
+,		SchemaEntry("ifcbooleanoperator",NULL )
+,		SchemaEntry("ifcductfittingtypeenum",NULL )
+,		SchemaEntry("ifccurrencyenum",NULL )
+,		SchemaEntry("ifcobjecttypeenum",NULL )
+,		SchemaEntry("ifcthermalloadtypeenum",NULL )
+,		SchemaEntry("ifcionconcentrationmeasure",NULL )
+,		SchemaEntry("ifcobjectreferenceselect",NULL )
+,		SchemaEntry("ifcclassificationnotationselect",NULL )
+,		SchemaEntry("ifcbsplinecurveform",NULL )
+,		SchemaEntry("ifcelementcompositionenum",NULL )
+,		SchemaEntry("ifcdraughtingcalloutelement",NULL )
+,		SchemaEntry("ifcfillstyleselect",NULL )
+,		SchemaEntry("ifcheatfluxdensitymeasure",NULL )
+,		SchemaEntry("ifcgeometricprojectionenum",NULL )
+,		SchemaEntry("ifcfontvariant",NULL )
+,		SchemaEntry("ifcthermalresistancemeasure",NULL )
+,		SchemaEntry("ifcreflectancemethodenum",NULL )
+,		SchemaEntry("ifcslabtypeenum",NULL )
+,		SchemaEntry("ifcpositiveratiomeasure",NULL )
+,		SchemaEntry("ifcinternalorexternalenum",NULL )
+,		SchemaEntry("ifcdimensionextentusage",NULL )
+,		SchemaEntry("ifcpipefittingtypeenum",NULL )
+,		SchemaEntry("ifcsanitaryterminaltypeenum",NULL )
+,		SchemaEntry("ifcminuteinhour",NULL )
+,		SchemaEntry("ifcwalltypeenum",NULL )
+,		SchemaEntry("ifcmolecularweightmeasure",NULL )
+,		SchemaEntry("ifcunitaryequipmenttypeenum",NULL )
+,		SchemaEntry("ifcproceduretypeenum",NULL )
+,		SchemaEntry("ifcdistributionchamberelementtypeenum",NULL )
+,		SchemaEntry("ifctextpath",NULL )
+,		SchemaEntry("ifccostscheduletypeenum",NULL )
+,		SchemaEntry("ifcshell",NULL )
+,		SchemaEntry("ifclinearmomentmeasure",NULL )
+,		SchemaEntry("ifcelectriccurrentmeasure",NULL )
+,		SchemaEntry("ifcdaylightsavinghour",NULL )
+,		SchemaEntry("ifcnormalisedratiomeasure",NULL )
+,		SchemaEntry("ifcfantypeenum",NULL )
+,		SchemaEntry("ifccontextdependentmeasure",NULL )
+,		SchemaEntry("ifcaheadorbehind",NULL )
+,		SchemaEntry("ifcfontstyle",NULL )
+,		SchemaEntry("ifccooledbeamtypeenum",NULL )
+,		SchemaEntry("ifcsurfacestyleelementselect",NULL )
+,		SchemaEntry("ifcyearnumber",NULL )
+,		SchemaEntry("ifclabel",NULL )
+,		SchemaEntry("ifctimestamp",NULL )
+,		SchemaEntry("ifcfiresuppressionterminaltypeenum",NULL )
+,		SchemaEntry("ifcdocumentconfidentialityenum",NULL )
+,		SchemaEntry("ifccolourorfactor",NULL )
+,		SchemaEntry("ifcairterminalboxtypeenum",NULL )
+,		SchemaEntry("ifcnumericmeasure",NULL )
+,		SchemaEntry("ifcderivedunitenum",NULL )
+,		SchemaEntry("ifccurveoredgecurve",NULL )
+,		SchemaEntry("ifclightemissionsourceenum",NULL )
+,		SchemaEntry("ifckinematicviscositymeasure",NULL )
+,		SchemaEntry("ifcboxalignment",NULL )
+,		SchemaEntry("ifcdocumentselect",NULL )
+,		SchemaEntry("ifccablecarrierfittingtypeenum",NULL )
+,		SchemaEntry("ifcpumptypeenum",NULL )
+,		SchemaEntry("ifchourinday",NULL )
+,		SchemaEntry("ifcprojectorderrecordtypeenum",NULL )
+,		SchemaEntry("ifcwindowstyleconstructionenum",NULL )
+,		SchemaEntry("ifcpresentationstyleselect",NULL )
+,		SchemaEntry("ifccablesegmenttypeenum",NULL )
+,		SchemaEntry("ifcwasteterminaltypeenum",NULL )
+,		SchemaEntry("ifcisothermalmoisturecapacitymeasure",NULL )
+,		SchemaEntry("ifcidentifier",NULL )
+,		SchemaEntry("ifcradioactivitymeasure",NULL )
+,		SchemaEntry("ifcsymbolstyleselect",NULL )
+,		SchemaEntry("ifcrooftypeenum",NULL )
+,		SchemaEntry("ifcreal",NULL )
+,		SchemaEntry("ifcroleenum",NULL )
+,		SchemaEntry("ifcmeasurevalue",NULL )
+,		SchemaEntry("ifcpiletypeenum",NULL )
+,		SchemaEntry("ifcelectriccurrentenum",NULL )
+,		SchemaEntry("ifctexttransformation",NULL )
+,		SchemaEntry("ifcfiltertypeenum",NULL )
+,		SchemaEntry("ifctransformertypeenum",NULL )
+,		SchemaEntry("ifcsurfaceside",NULL )
+,		SchemaEntry("ifcthermaltransmittancemeasure",NULL )
+,		SchemaEntry("ifctubebundletypeenum",NULL )
+,		SchemaEntry("ifclightfixturetypeenum",NULL )
+,		SchemaEntry("ifcinductancemeasure",NULL )
+,		SchemaEntry("ifcglobalorlocalenum",NULL )
+,		SchemaEntry("ifcoutlettypeenum",NULL )
+,		SchemaEntry("ifcworkcontroltypeenum",NULL )
+,		SchemaEntry("ifcwarpingmomentmeasure",NULL )
+,		SchemaEntry("ifcdynamicviscositymeasure",NULL )
+,		SchemaEntry("ifcenergysequenceenum",NULL )
+,		SchemaEntry("ifcfillareastyletileshapeselect",NULL )
+,		SchemaEntry("ifcpointorvertexpoint",NULL )
+,		SchemaEntry("ifcvibrationisolatortypeenum",NULL )
+,		SchemaEntry("ifctanktypeenum",NULL )
+,		SchemaEntry("ifctimeseriesdatatypeenum",NULL )
+,		SchemaEntry("ifcsurfacetextureenum",NULL )
+,		SchemaEntry("ifcaddresstypeenum",NULL )
+,		SchemaEntry("ifcchillertypeenum",NULL )
+,		SchemaEntry("ifccomplexnumber",NULL )
+,		SchemaEntry("ifclightdistributioncurveenum",NULL )
+,		SchemaEntry("ifcreinforcingbarroleenum",NULL )
+,		SchemaEntry("ifcresourceconsumptionenum",NULL )
+,		SchemaEntry("ifccsgselect",NULL )
+,		SchemaEntry("ifcmodulusoflinearsubgradereactionmeasure",NULL )
+,		SchemaEntry("ifcevaporatortypeenum",NULL )
+,		SchemaEntry("ifctimeseriesscheduletypeenum",NULL )
+,		SchemaEntry("ifcdayinmonthnumber",NULL )
+,		SchemaEntry("ifcelectricmotortypeenum",NULL )
+,		SchemaEntry("ifcthermalconductivitymeasure",NULL )
+,		SchemaEntry("ifcenergymeasure",NULL )
+,		SchemaEntry("ifcrotationalstiffnessmeasure",NULL )
+,		SchemaEntry("ifcderivedmeasurevalue",NULL )
+,		SchemaEntry("ifcdoorpaneloperationenum",NULL )
+,		SchemaEntry("ifccurvestylefontselect",NULL )
+,		SchemaEntry("ifcwindowpaneloperationenum",NULL )
+,		SchemaEntry("ifcdataoriginenum",NULL )
+,		SchemaEntry("ifcstairtypeenum",NULL )
+,		SchemaEntry("ifcrailingtypeenum",NULL )
+,		SchemaEntry("ifcpowermeasure",NULL )
+,		SchemaEntry("ifcstackterminaltypeenum",NULL )
+,		SchemaEntry("ifchatchlinedistanceselect",NULL )
+,		SchemaEntry("ifctrimmingselect",NULL )
+,		SchemaEntry("ifcthermalexpansioncoefficientmeasure",NULL )
+,		SchemaEntry("ifclightdistributiondatasourceselect",NULL )
+,		SchemaEntry("ifctorquemeasure",NULL )
+,		SchemaEntry("ifcmassperlengthmeasure",NULL )
+,		SchemaEntry("ifcvalvetypeenum",NULL )
+,		SchemaEntry("ifcwindowpanelpositionenum",NULL )
+,		SchemaEntry("ifcsurfaceorfacesurface",NULL )
+,		SchemaEntry("ifcpropertysourceenum",NULL )
+,		SchemaEntry("ifccablecarriersegmenttypeenum",NULL )
+,		SchemaEntry("ifccountmeasure",NULL )
+,		SchemaEntry("ifcfontweight",NULL )
+,		SchemaEntry("ifcphysicalorvirtualenum",NULL )
+,		SchemaEntry("ifcspacetypeenum",NULL )
+,		SchemaEntry("ifcvolumetricflowratemeasure",NULL )
+,		SchemaEntry("ifcluminousfluxmeasure",NULL )
+,		SchemaEntry("ifcevaporativecoolertypeenum",NULL )
+,		SchemaEntry("ifclayereditem",NULL )
+,		SchemaEntry("ifcmodulusofsubgradereactionmeasure",NULL )
+,		SchemaEntry("ifcheatexchangertypeenum",NULL )
+,		SchemaEntry("ifcprotectivedevicetypeenum",NULL )
+,		SchemaEntry("ifcdampertypeenum",NULL )
+,		SchemaEntry("ifccontrollertypeenum",NULL )
+,		SchemaEntry("ifcmassflowratemeasure",NULL )
+,		SchemaEntry("ifcassemblyplaceenum",NULL )
+,		SchemaEntry("ifcareameasure",NULL )
+,		SchemaEntry("ifcservicelifefactortypeenum",NULL )
+,		SchemaEntry("ifcvolumemeasure",NULL )
+,		SchemaEntry("ifcbeamtypeenum",NULL )
+,		SchemaEntry("ifcstateenum",NULL )
+,		SchemaEntry("ifcspaceheatertypeenum",NULL )
+,		SchemaEntry("ifcsectiontypeenum",NULL )
+,		SchemaEntry("ifcfootingtypeenum",NULL )
+,		SchemaEntry("ifcmonetarymeasure",NULL )
+,		SchemaEntry("ifcloadgrouptypeenum",NULL )
+,		SchemaEntry("ifcelectricgeneratortypeenum",NULL )
+,		SchemaEntry("ifcflowmetertypeenum",NULL )
+,		SchemaEntry("ifcmaterialselect",NULL )
+,		SchemaEntry("ifcanalysismodeltypeenum",NULL )
+,		SchemaEntry("ifctemperaturegradientmeasure",NULL )
+,		SchemaEntry("ifcmodulusofrotationalsubgradereactionmeasure",NULL )
+,		SchemaEntry("ifccolour",NULL )
+,		SchemaEntry("ifccurtainwalltypeenum",NULL )
+,		SchemaEntry("ifcmetricvalueselect",NULL )
+,		SchemaEntry("ifctextalignment",NULL )
+,		SchemaEntry("ifcdoorpanelpositionenum",NULL )
+,		SchemaEntry("ifcplatetypeenum",NULL )
+,		SchemaEntry("ifcsectionalareaintegralmeasure",NULL )
+,		SchemaEntry("ifcpresentabletext",NULL )
+,		SchemaEntry("ifcvaporpermeabilitymeasure",NULL )
+,		SchemaEntry("ifcstructuralsurfacetypeenum",NULL )
+,		SchemaEntry("ifclinearvelocitymeasure",NULL )
+,		SchemaEntry("ifcintegercountratemeasure",NULL )
+,		SchemaEntry("ifcairtoairheatrecoverytypeenum",NULL )
+,		SchemaEntry("ifcdocumentstatusenum",NULL )
+,		SchemaEntry("ifclengthmeasure",NULL )
+,		SchemaEntry("ifcplanarforcemeasure",NULL )
+,		SchemaEntry("ifcbooleanoperand",NULL )
+,		SchemaEntry("ifcinteger",NULL )
+,		SchemaEntry("ifcramptypeenum",NULL )
+,		SchemaEntry("ifcactorselect",NULL )
+,		SchemaEntry("ifcelectricchargemeasure",NULL )
+,		SchemaEntry("ifcgeometricsetselect",NULL )
+,		SchemaEntry("ifcconnectiontypeenum",NULL )
+,		SchemaEntry("ifcvalue",NULL )
+,		SchemaEntry("ifccoolingtowertypeenum",NULL )
+,		SchemaEntry("ifcplaneanglemeasure",NULL )
+,		SchemaEntry("ifcswitchingdevicetypeenum",NULL )
+,		SchemaEntry("ifcflowdirectionenum",NULL )
+,		SchemaEntry("ifcthermalloadsourceenum",NULL )
+,		SchemaEntry("ifctextfontselect",NULL )
+,		SchemaEntry("ifcspecularhighlightselect",NULL )
+,		SchemaEntry("ifcanalysistheorytypeenum",NULL )
+,		SchemaEntry("ifctextfontname",NULL )
+,		SchemaEntry("ifcelectricvoltagemeasure",NULL )
+,		SchemaEntry("ifctendontypeenum",NULL )
+,		SchemaEntry("ifcsoundpressuremeasure",NULL )
+,		SchemaEntry("ifcelectricdistributionpointfunctionenum",NULL )
+,		SchemaEntry("ifcspecularroughness",NULL )
+,		SchemaEntry("ifcactiontypeenum",NULL )
+,		SchemaEntry("ifcreinforcingbarsurfaceenum",NULL )
+,		SchemaEntry("ifchumidifiertypeenum",NULL )
+,		SchemaEntry("ifcilluminancemeasure",NULL )
+,		SchemaEntry("ifclibraryselect",NULL )
+,		SchemaEntry("ifctext",NULL )
+,		SchemaEntry("ifclayersetdirectionenum",NULL )
+,		SchemaEntry("ifcboilertypeenum",NULL )
+,		SchemaEntry("ifctimemeasure",NULL )
+,		SchemaEntry("ifcaccelerationmeasure",NULL )
+,		SchemaEntry("ifcelectricflowstoragedevicetypeenum",NULL )
+,		SchemaEntry("ifcluminousintensitymeasure",NULL )
+,		SchemaEntry("ifcdefinedsymbolselect",NULL )
+,		SchemaEntry("ifcunitenum",NULL )
+,		SchemaEntry("ifcinventorytypeenum",NULL )
+,		SchemaEntry("ifcstructuralactivityassignmentselect",NULL )
+,		SchemaEntry("ifcelementassemblytypeenum",NULL )
+,		SchemaEntry("ifcservicelifetypeenum",NULL )
+,		SchemaEntry("ifccoveringtypeenum",NULL )
+,		SchemaEntry("ifcstairflighttypeenum",NULL )
+,		SchemaEntry("ifcsiprefix",NULL )
+,		SchemaEntry("ifcelectriccapacitancemeasure",NULL )
+,		SchemaEntry("ifcflowinstrumenttypeenum",NULL )
+,		SchemaEntry("ifcthermodynamictemperaturemeasure",NULL )
+,		SchemaEntry("ifcgloballyuniqueid",NULL )
+,		SchemaEntry("ifclamptypeenum",NULL )
+,		SchemaEntry("ifcmagneticfluxmeasure",NULL )
+,		SchemaEntry("ifcsolidanglemeasure",NULL )
+,		SchemaEntry("ifcfrequencymeasure",NULL )
+,		SchemaEntry("ifctransportelementtypeenum",NULL )
+,		SchemaEntry("ifcsoundscaleenum",NULL )
+,		SchemaEntry("ifcphmeasure",NULL )
+,		SchemaEntry("ifcactuatortypeenum",NULL )
+,		SchemaEntry("ifcpositiveplaneanglemeasure",NULL )
+,		SchemaEntry("ifcappliedvalueselect",NULL )
+,		SchemaEntry("ifcsecondinminute",NULL )
+,		SchemaEntry("ifcductsegmenttypeenum",NULL )
+,		SchemaEntry("ifcthermaladmittancemeasure",NULL )
+,		SchemaEntry("ifcspecularexponent",NULL )
+,		SchemaEntry("ifcdatetimeselect",NULL )
+,		SchemaEntry("ifctransitioncode",NULL )
+,		SchemaEntry("ifcdimensioncount",NULL )
+,		SchemaEntry("ifclinearstiffnessmeasure",NULL )
+,		SchemaEntry("ifccompoundplaneanglemeasure",NULL )
+,		SchemaEntry("ifcelectricappliancetypeenum",NULL )
+,		SchemaEntry("ifcprofiletypeenum",NULL )
+,		SchemaEntry("ifccurvefontorscaledcurvefontselect",NULL )
+,		SchemaEntry("ifcprojectedortruelengthenum",NULL )
+,		SchemaEntry("ifcabsorbeddosemeasure",NULL )
+,		SchemaEntry("ifcparametervalue",NULL )
+,		SchemaEntry("ifcpileconstructionenum",NULL )
+,		SchemaEntry("ifcmotorconnectiontypeenum",NULL )
+,		SchemaEntry("ifcoccupanttypeenum",NULL )
+,		SchemaEntry("ifcunit",NULL )
+,		SchemaEntry("ifclinearforcemeasure",NULL )
+,		SchemaEntry("ifccondensertypeenum",NULL )
+,		SchemaEntry("ifcdescriptivemeasure",NULL )
+,		SchemaEntry("ifcmomentofinertiameasure",NULL )
+,		SchemaEntry("ifcdoseequivalentmeasure",NULL )
+,		SchemaEntry("ifcorientationselect",NULL )
+,		SchemaEntry("ifclogical",NULL )
+,		SchemaEntry("ifcsizeselect",NULL )
+,		SchemaEntry("ifcenvironmentalimpactcategoryenum",NULL )
+,		SchemaEntry("ifclogicaloperatorenum",NULL )
+,		SchemaEntry("ifccompressortypeenum",NULL )
+,		SchemaEntry("ifcbenchmarkenum",NULL )
+,		SchemaEntry("ifcratiomeasure",NULL )
+,		SchemaEntry("ifcvectorordirection",NULL )
+,		SchemaEntry("ifcconstraintenum",NULL )
+,		SchemaEntry("ifcalarmtypeenum",NULL )
+,		SchemaEntry("ifcluminousintensitydistributionmeasure",NULL )
+,		SchemaEntry("ifcarithmeticoperatorenum",NULL )
+,		SchemaEntry("ifcaxis2placement",NULL )
+,		SchemaEntry("ifcforcemeasure",NULL )
+,		SchemaEntry("ifctrimmingpreference",NULL )
+,		SchemaEntry("ifcelectricresistancemeasure",NULL )
+,		SchemaEntry("ifcwarpingconstantmeasure",NULL )
+,		SchemaEntry("ifcpipesegmenttypeenum",NULL )
+,		SchemaEntry("ifcconditioncriterionselect",NULL )
+,		SchemaEntry("ifcshearmodulusmeasure",NULL )
+,		SchemaEntry("ifcpressuremeasure",NULL )
+,		SchemaEntry("ifcductsilencertypeenum",NULL )
+,		SchemaEntry("ifcboolean",NULL )
+,		SchemaEntry("ifcsectionmodulusmeasure",NULL )
+,		SchemaEntry("ifcchangeactionenum",NULL )
+,		SchemaEntry("ifccoiltypeenum",NULL )
+,		SchemaEntry("ifcmassmeasure",NULL )
+,		SchemaEntry("ifcstructuralcurvetypeenum",NULL )
+,		SchemaEntry("ifcpermeablecoveringoperationenum",NULL )
+,		SchemaEntry("ifcmagneticfluxdensitymeasure",NULL )
+,		SchemaEntry("ifcmoisturediffusivitymeasure",NULL )
+,		SchemaEntry("ifcroot",&STEP::ObjectHelper<IfcRoot,4>::Construct )
+,		SchemaEntry("ifcobjectdefinition",&STEP::ObjectHelper<IfcObjectDefinition,0>::Construct )
+,		SchemaEntry("ifctypeobject",&STEP::ObjectHelper<IfcTypeObject,2>::Construct )
+,		SchemaEntry("ifctypeproduct",&STEP::ObjectHelper<IfcTypeProduct,2>::Construct )
+,		SchemaEntry("ifcelementtype",&STEP::ObjectHelper<IfcElementType,1>::Construct )
+,		SchemaEntry("ifcfurnishingelementtype",&STEP::ObjectHelper<IfcFurnishingElementType,0>::Construct )
+,		SchemaEntry("ifcfurnituretype",&STEP::ObjectHelper<IfcFurnitureType,1>::Construct )
+,		SchemaEntry("ifcobject",&STEP::ObjectHelper<IfcObject,1>::Construct )
+,		SchemaEntry("ifcproduct",&STEP::ObjectHelper<IfcProduct,2>::Construct )
+,		SchemaEntry("ifcgrid",&STEP::ObjectHelper<IfcGrid,3>::Construct )
+,		SchemaEntry("ifcrepresentationitem",&STEP::ObjectHelper<IfcRepresentationItem,0>::Construct )
+,		SchemaEntry("ifcgeometricrepresentationitem",&STEP::ObjectHelper<IfcGeometricRepresentationItem,0>::Construct )
+,		SchemaEntry("ifconedirectionrepeatfactor",&STEP::ObjectHelper<IfcOneDirectionRepeatFactor,1>::Construct )
+,		SchemaEntry("ifctwodirectionrepeatfactor",&STEP::ObjectHelper<IfcTwoDirectionRepeatFactor,1>::Construct )
+,		SchemaEntry("ifcelement",&STEP::ObjectHelper<IfcElement,1>::Construct )
+,		SchemaEntry("ifcelementcomponent",&STEP::ObjectHelper<IfcElementComponent,0>::Construct )
+,		SchemaEntry("ifclocaltime",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcspatialstructureelementtype",&STEP::ObjectHelper<IfcSpatialStructureElementType,0>::Construct )
+,		SchemaEntry("ifccontrol",&STEP::ObjectHelper<IfcControl,0>::Construct )
+,		SchemaEntry("ifcactionrequest",&STEP::ObjectHelper<IfcActionRequest,1>::Construct )
+,		SchemaEntry("ifctexturevertex",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpropertydefinition",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpropertysetdefinition",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcfluidflowproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdocumentinformation",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccalendardate",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdistributionelementtype",&STEP::ObjectHelper<IfcDistributionElementType,0>::Construct )
+,		SchemaEntry("ifcdistributionflowelementtype",&STEP::ObjectHelper<IfcDistributionFlowElementType,0>::Construct )
+,		SchemaEntry("ifcenergyconversiondevicetype",&STEP::ObjectHelper<IfcEnergyConversionDeviceType,0>::Construct )
+,		SchemaEntry("ifccooledbeamtype",&STEP::ObjectHelper<IfcCooledBeamType,1>::Construct )
+,		SchemaEntry("ifccsgprimitive3d",&STEP::ObjectHelper<IfcCsgPrimitive3D,1>::Construct )
+,		SchemaEntry("ifcrectangularpyramid",&STEP::ObjectHelper<IfcRectangularPyramid,3>::Construct )
+,		SchemaEntry("ifcstructuralload",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralloadstatic",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralloadlinearforce",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsurface",&STEP::ObjectHelper<IfcSurface,0>::Construct )
+,		SchemaEntry("ifcboundedsurface",&STEP::ObjectHelper<IfcBoundedSurface,0>::Construct )
+,		SchemaEntry("ifcrectangulartrimmedsurface",&STEP::ObjectHelper<IfcRectangularTrimmedSurface,7>::Construct )
+,		SchemaEntry("ifcphysicalquantity",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcphysicalsimplequantity",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcquantityvolume",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcquantityarea",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcgroup",&STEP::ObjectHelper<IfcGroup,0>::Construct )
+,		SchemaEntry("ifcrelationship",&STEP::ObjectHelper<IfcRelationship,0>::Construct )
+,		SchemaEntry("ifcrelassigns",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassignstoactor",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifchalfspacesolid",&STEP::ObjectHelper<IfcHalfSpaceSolid,2>::Construct )
+,		SchemaEntry("ifcpolygonalboundedhalfspace",&STEP::ObjectHelper<IfcPolygonalBoundedHalfSpace,2>::Construct )
+,		SchemaEntry("ifcenergyproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcairtoairheatrecoverytype",&STEP::ObjectHelper<IfcAirToAirHeatRecoveryType,1>::Construct )
+,		SchemaEntry("ifcflowfittingtype",&STEP::ObjectHelper<IfcFlowFittingType,0>::Construct )
+,		SchemaEntry("ifcpipefittingtype",&STEP::ObjectHelper<IfcPipeFittingType,1>::Construct )
+,		SchemaEntry("ifcrepresentation",&STEP::ObjectHelper<IfcRepresentation,4>::Construct )
+,		SchemaEntry("ifcstylemodel",&STEP::ObjectHelper<IfcStyleModel,0>::Construct )
+,		SchemaEntry("ifcstyledrepresentation",&STEP::ObjectHelper<IfcStyledRepresentation,0>::Construct )
+,		SchemaEntry("ifcrelassignstocontrol",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassignstoprojectorder",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdimensionalexponents",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcbooleanresult",&STEP::ObjectHelper<IfcBooleanResult,3>::Construct )
+,		SchemaEntry("ifcsoundproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcfeatureelement",&STEP::ObjectHelper<IfcFeatureElement,0>::Construct )
+,		SchemaEntry("ifcfeatureelementsubtraction",&STEP::ObjectHelper<IfcFeatureElementSubtraction,0>::Construct )
+,		SchemaEntry("ifcopeningelement",&STEP::ObjectHelper<IfcOpeningElement,0>::Construct )
+,		SchemaEntry("ifcconditioncriterion",&STEP::ObjectHelper<IfcConditionCriterion,2>::Construct )
+,		SchemaEntry("ifcflowterminaltype",&STEP::ObjectHelper<IfcFlowTerminalType,0>::Construct )
+,		SchemaEntry("ifcflowcontrollertype",&STEP::ObjectHelper<IfcFlowControllerType,0>::Construct )
+,		SchemaEntry("ifcswitchingdevicetype",&STEP::ObjectHelper<IfcSwitchingDeviceType,1>::Construct )
+,		SchemaEntry("ifcsystem",&STEP::ObjectHelper<IfcSystem,0>::Construct )
+,		SchemaEntry("ifcelectricalcircuit",&STEP::ObjectHelper<IfcElectricalCircuit,0>::Construct )
+,		SchemaEntry("ifcactorrole",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdateandtime",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdraughtingcalloutrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdimensioncalloutrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcderivedunitelement",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcexternalreference",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcclassificationreference",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcunitaryequipmenttype",&STEP::ObjectHelper<IfcUnitaryEquipmentType,1>::Construct )
+,		SchemaEntry("ifcproperty",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcport",&STEP::ObjectHelper<IfcPort,0>::Construct )
+,		SchemaEntry("ifcaddress",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcplacement",&STEP::ObjectHelper<IfcPlacement,1>::Construct )
+,		SchemaEntry("ifcpredefineditem",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpredefinedcolour",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdraughtingpredefinedcolour",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcprofiledef",&STEP::ObjectHelper<IfcProfileDef,2>::Construct )
+,		SchemaEntry("ifcarbitraryclosedprofiledef",&STEP::ObjectHelper<IfcArbitraryClosedProfileDef,1>::Construct )
+,		SchemaEntry("ifccurve",&STEP::ObjectHelper<IfcCurve,0>::Construct )
+,		SchemaEntry("ifcconic",&STEP::ObjectHelper<IfcConic,1>::Construct )
+,		SchemaEntry("ifccircle",&STEP::ObjectHelper<IfcCircle,1>::Construct )
+,		SchemaEntry("ifcappliedvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcenvironmentalimpactvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsimpleproperty",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpropertysinglevalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelementarysurface",&STEP::ObjectHelper<IfcElementarySurface,1>::Construct )
+,		SchemaEntry("ifcplane",&STEP::ObjectHelper<IfcPlane,0>::Construct )
+,		SchemaEntry("ifcpropertyboundedvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccostschedule",&STEP::ObjectHelper<IfcCostSchedule,8>::Construct )
+,		SchemaEntry("ifcmonetaryunit",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcconnectiongeometry",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcconnectioncurvegeometry",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrightcircularcone",&STEP::ObjectHelper<IfcRightCircularCone,2>::Construct )
+,		SchemaEntry("ifcelementassembly",&STEP::ObjectHelper<IfcElementAssembly,2>::Construct )
+,		SchemaEntry("ifcbuildingelement",&STEP::ObjectHelper<IfcBuildingElement,0>::Construct )
+,		SchemaEntry("ifcmember",&STEP::ObjectHelper<IfcMember,0>::Construct )
+,		SchemaEntry("ifcpropertydependencyrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcbuildingelementproxy",&STEP::ObjectHelper<IfcBuildingElementProxy,1>::Construct )
+,		SchemaEntry("ifcstructuralactivity",&STEP::ObjectHelper<IfcStructuralActivity,2>::Construct )
+,		SchemaEntry("ifcstructuralaction",&STEP::ObjectHelper<IfcStructuralAction,2>::Construct )
+,		SchemaEntry("ifcstructuralplanaraction",&STEP::ObjectHelper<IfcStructuralPlanarAction,1>::Construct )
+,		SchemaEntry("ifctopologicalrepresentationitem",&STEP::ObjectHelper<IfcTopologicalRepresentationItem,0>::Construct )
+,		SchemaEntry("ifcconnectedfaceset",&STEP::ObjectHelper<IfcConnectedFaceSet,1>::Construct )
+,		SchemaEntry("ifcsweptsurface",&STEP::ObjectHelper<IfcSweptSurface,2>::Construct )
+,		SchemaEntry("ifcsurfaceoflinearextrusion",&STEP::ObjectHelper<IfcSurfaceOfLinearExtrusion,2>::Construct )
+,		SchemaEntry("ifcarbitraryprofiledefwithvoids",&STEP::ObjectHelper<IfcArbitraryProfileDefWithVoids,1>::Construct )
+,		SchemaEntry("ifcprocess",&STEP::ObjectHelper<IfcProcess,0>::Construct )
+,		SchemaEntry("ifcprocedure",&STEP::ObjectHelper<IfcProcedure,3>::Construct )
+,		SchemaEntry("ifccurvestylefontpattern",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcvector",&STEP::ObjectHelper<IfcVector,2>::Construct )
+,		SchemaEntry("ifcfacebound",&STEP::ObjectHelper<IfcFaceBound,2>::Construct )
+,		SchemaEntry("ifcfaceouterbound",&STEP::ObjectHelper<IfcFaceOuterBound,0>::Construct )
+,		SchemaEntry("ifcfeatureelementaddition",&STEP::ObjectHelper<IfcFeatureElementAddition,0>::Construct )
+,		SchemaEntry("ifcnamedunit",&STEP::ObjectHelper<IfcNamedUnit,2>::Construct )
+,		SchemaEntry("ifcconversionbasedunit",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralloadsingleforce",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcheatexchangertype",&STEP::ObjectHelper<IfcHeatExchangerType,1>::Construct )
+,		SchemaEntry("ifcpresentationstyleassignment",&STEP::ObjectHelper<IfcPresentationStyleAssignment,1>::Construct )
+,		SchemaEntry("ifcflowtreatmentdevicetype",&STEP::ObjectHelper<IfcFlowTreatmentDeviceType,0>::Construct )
+,		SchemaEntry("ifcfiltertype",&STEP::ObjectHelper<IfcFilterType,1>::Construct )
+,		SchemaEntry("ifcresource",&STEP::ObjectHelper<IfcResource,0>::Construct )
+,		SchemaEntry("ifcevaporativecoolertype",&STEP::ObjectHelper<IfcEvaporativeCoolerType,1>::Construct )
+,		SchemaEntry("ifctexturecoordinate",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctexturecoordinategenerator",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcoffsetcurve2d",&STEP::ObjectHelper<IfcOffsetCurve2D,3>::Construct )
+,		SchemaEntry("ifcedge",&STEP::ObjectHelper<IfcEdge,2>::Construct )
+,		SchemaEntry("ifcsubedge",&STEP::ObjectHelper<IfcSubedge,1>::Construct )
+,		SchemaEntry("ifcproxy",&STEP::ObjectHelper<IfcProxy,2>::Construct )
+,		SchemaEntry("ifcline",&STEP::ObjectHelper<IfcLine,2>::Construct )
+,		SchemaEntry("ifccolumn",&STEP::ObjectHelper<IfcColumn,0>::Construct )
+,		SchemaEntry("ifcclassificationnotationfacet",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcobjectplacement",&STEP::ObjectHelper<IfcObjectPlacement,0>::Construct )
+,		SchemaEntry("ifcgridplacement",&STEP::ObjectHelper<IfcGridPlacement,2>::Construct )
+,		SchemaEntry("ifcdistributioncontrolelementtype",&STEP::ObjectHelper<IfcDistributionControlElementType,0>::Construct )
+,		SchemaEntry("ifcstructuralloadsingleforcewarping",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcexternallydefinedtextfont",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelconnects",&STEP::ObjectHelper<IfcRelConnects,0>::Construct )
+,		SchemaEntry("ifcrelconnectselements",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelconnectswithrealizingelements",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcconstraintclassificationrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcannotation",&STEP::ObjectHelper<IfcAnnotation,0>::Construct )
+,		SchemaEntry("ifcplate",&STEP::ObjectHelper<IfcPlate,0>::Construct )
+,		SchemaEntry("ifcsolidmodel",&STEP::ObjectHelper<IfcSolidModel,0>::Construct )
+,		SchemaEntry("ifcmanifoldsolidbrep",&STEP::ObjectHelper<IfcManifoldSolidBrep,1>::Construct )
+,		SchemaEntry("ifcpredefinedcurvefont",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcboundarycondition",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcboundaryfacecondition",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcflowstoragedevicetype",&STEP::ObjectHelper<IfcFlowStorageDeviceType,0>::Construct )
+,		SchemaEntry("ifcstructuralitem",&STEP::ObjectHelper<IfcStructuralItem,0>::Construct )
+,		SchemaEntry("ifcstructuralmember",&STEP::ObjectHelper<IfcStructuralMember,0>::Construct )
+,		SchemaEntry("ifcstructuralcurvemember",&STEP::ObjectHelper<IfcStructuralCurveMember,1>::Construct )
+,		SchemaEntry("ifcstructuralconnection",&STEP::ObjectHelper<IfcStructuralConnection,1>::Construct )
+,		SchemaEntry("ifcstructuralsurfaceconnection",&STEP::ObjectHelper<IfcStructuralSurfaceConnection,0>::Construct )
+,		SchemaEntry("ifccoiltype",&STEP::ObjectHelper<IfcCoilType,1>::Construct )
+,		SchemaEntry("ifcductfittingtype",&STEP::ObjectHelper<IfcDuctFittingType,1>::Construct )
+,		SchemaEntry("ifcstyleditem",&STEP::ObjectHelper<IfcStyledItem,3>::Construct )
+,		SchemaEntry("ifcannotationoccurrence",&STEP::ObjectHelper<IfcAnnotationOccurrence,0>::Construct )
+,		SchemaEntry("ifcannotationcurveoccurrence",&STEP::ObjectHelper<IfcAnnotationCurveOccurrence,0>::Construct )
+,		SchemaEntry("ifcdimensioncurve",&STEP::ObjectHelper<IfcDimensionCurve,0>::Construct )
+,		SchemaEntry("ifcboundedcurve",&STEP::ObjectHelper<IfcBoundedCurve,0>::Construct )
+,		SchemaEntry("ifcaxis1placement",&STEP::ObjectHelper<IfcAxis1Placement,1>::Construct )
+,		SchemaEntry("ifclightintensitydistribution",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpredefinedsymbol",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralpointaction",&STEP::ObjectHelper<IfcStructuralPointAction,0>::Construct )
+,		SchemaEntry("ifcspatialstructureelement",&STEP::ObjectHelper<IfcSpatialStructureElement,2>::Construct )
+,		SchemaEntry("ifcspace",&STEP::ObjectHelper<IfcSpace,2>::Construct )
+,		SchemaEntry("ifccontextdependentunit",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcvirtualgridintersection",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassociates",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassociatesclassification",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccoolingtowertype",&STEP::ObjectHelper<IfcCoolingTowerType,1>::Construct )
+,		SchemaEntry("ifcmaterialproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcgeneralmaterialproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcfacetedbrepwithvoids",&STEP::ObjectHelper<IfcFacetedBrepWithVoids,1>::Construct )
+,		SchemaEntry("ifcprofileproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcgeneralprofileproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralprofileproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcvalvetype",&STEP::ObjectHelper<IfcValveType,1>::Construct )
+,		SchemaEntry("ifcsystemfurnitureelementtype",&STEP::ObjectHelper<IfcSystemFurnitureElementType,0>::Construct )
+,		SchemaEntry("ifcdiscreteaccessory",&STEP::ObjectHelper<IfcDiscreteAccessory,0>::Construct )
+,		SchemaEntry("ifcperson",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcbuildingelementtype",&STEP::ObjectHelper<IfcBuildingElementType,0>::Construct )
+,		SchemaEntry("ifcrailingtype",&STEP::ObjectHelper<IfcRailingType,1>::Construct )
+,		SchemaEntry("ifcgasterminaltype",&STEP::ObjectHelper<IfcGasTerminalType,1>::Construct )
+,		SchemaEntry("ifctimeseries",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcirregulartimeseries",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcspaceprogram",&STEP::ObjectHelper<IfcSpaceProgram,5>::Construct )
+,		SchemaEntry("ifccovering",&STEP::ObjectHelper<IfcCovering,1>::Construct )
+,		SchemaEntry("ifcshapeaspect",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpresentationstyle",&STEP::ObjectHelper<IfcPresentationStyle,1>::Construct )
+,		SchemaEntry("ifcclassificationitemrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelectricheatertype",&STEP::ObjectHelper<IfcElectricHeaterType,1>::Construct )
+,		SchemaEntry("ifcbuildingstorey",&STEP::ObjectHelper<IfcBuildingStorey,1>::Construct )
+,		SchemaEntry("ifcvertex",&STEP::ObjectHelper<IfcVertex,0>::Construct )
+,		SchemaEntry("ifcvertexpoint",&STEP::ObjectHelper<IfcVertexPoint,1>::Construct )
+,		SchemaEntry("ifcflowinstrumenttype",&STEP::ObjectHelper<IfcFlowInstrumentType,1>::Construct )
+,		SchemaEntry("ifcparameterizedprofiledef",&STEP::ObjectHelper<IfcParameterizedProfileDef,1>::Construct )
+,		SchemaEntry("ifcushapeprofiledef",&STEP::ObjectHelper<IfcUShapeProfileDef,8>::Construct )
+,		SchemaEntry("ifcramp",&STEP::ObjectHelper<IfcRamp,1>::Construct )
+,		SchemaEntry("ifcfillareastyle",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccompositecurve",&STEP::ObjectHelper<IfcCompositeCurve,2>::Construct )
+,		SchemaEntry("ifcrelservicesbuildings",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralcurvemembervarying",&STEP::ObjectHelper<IfcStructuralCurveMemberVarying,0>::Construct )
+,		SchemaEntry("ifcrelreferencedinspatialstructure",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrampflighttype",&STEP::ObjectHelper<IfcRampFlightType,1>::Construct )
+,		SchemaEntry("ifcdraughtingcallout",&STEP::ObjectHelper<IfcDraughtingCallout,1>::Construct )
+,		SchemaEntry("ifcdimensioncurvedirectedcallout",&STEP::ObjectHelper<IfcDimensionCurveDirectedCallout,0>::Construct )
+,		SchemaEntry("ifcradiusdimension",&STEP::ObjectHelper<IfcRadiusDimension,0>::Construct )
+,		SchemaEntry("ifcedgefeature",&STEP::ObjectHelper<IfcEdgeFeature,1>::Construct )
+,		SchemaEntry("ifcsweptareasolid",&STEP::ObjectHelper<IfcSweptAreaSolid,2>::Construct )
+,		SchemaEntry("ifcextrudedareasolid",&STEP::ObjectHelper<IfcExtrudedAreaSolid,2>::Construct )
+,		SchemaEntry("ifcquantitycount",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcannotationtextoccurrence",&STEP::ObjectHelper<IfcAnnotationTextOccurrence,0>::Construct )
+,		SchemaEntry("ifcreferencesvaluedocument",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstair",&STEP::ObjectHelper<IfcStair,1>::Construct )
+,		SchemaEntry("ifcsymbolstyle",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcfillareastyletilesymbolwithstyle",&STEP::ObjectHelper<IfcFillAreaStyleTileSymbolWithStyle,1>::Construct )
+,		SchemaEntry("ifcannotationsymboloccurrence",&STEP::ObjectHelper<IfcAnnotationSymbolOccurrence,0>::Construct )
+,		SchemaEntry("ifcterminatorsymbol",&STEP::ObjectHelper<IfcTerminatorSymbol,1>::Construct )
+,		SchemaEntry("ifcdimensioncurveterminator",&STEP::ObjectHelper<IfcDimensionCurveTerminator,1>::Construct )
+,		SchemaEntry("ifcrectangleprofiledef",&STEP::ObjectHelper<IfcRectangleProfileDef,2>::Construct )
+,		SchemaEntry("ifcrectanglehollowprofiledef",&STEP::ObjectHelper<IfcRectangleHollowProfileDef,3>::Construct )
+,		SchemaEntry("ifcrelassociateslibrary",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifclocalplacement",&STEP::ObjectHelper<IfcLocalPlacement,2>::Construct )
+,		SchemaEntry("ifcopticalmaterialproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcservicelifefactor",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassignstasks",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctask",&STEP::ObjectHelper<IfcTask,5>::Construct )
+,		SchemaEntry("ifcannotationfillareaoccurrence",&STEP::ObjectHelper<IfcAnnotationFillAreaOccurrence,2>::Construct )
+,		SchemaEntry("ifcface",&STEP::ObjectHelper<IfcFace,1>::Construct )
+,		SchemaEntry("ifcflowsegmenttype",&STEP::ObjectHelper<IfcFlowSegmentType,0>::Construct )
+,		SchemaEntry("ifcductsegmenttype",&STEP::ObjectHelper<IfcDuctSegmentType,1>::Construct )
+,		SchemaEntry("ifcpropertyenumeration",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcconstructionresource",&STEP::ObjectHelper<IfcConstructionResource,4>::Construct )
+,		SchemaEntry("ifcconstructionequipmentresource",&STEP::ObjectHelper<IfcConstructionEquipmentResource,0>::Construct )
+,		SchemaEntry("ifcsanitaryterminaltype",&STEP::ObjectHelper<IfcSanitaryTerminalType,1>::Construct )
+,		SchemaEntry("ifcpredefineddimensionsymbol",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcorganization",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccircleprofiledef",&STEP::ObjectHelper<IfcCircleProfileDef,1>::Construct )
+,		SchemaEntry("ifcstructuralreaction",&STEP::ObjectHelper<IfcStructuralReaction,0>::Construct )
+,		SchemaEntry("ifcstructuralpointreaction",&STEP::ObjectHelper<IfcStructuralPointReaction,0>::Construct )
+,		SchemaEntry("ifcrailing",&STEP::ObjectHelper<IfcRailing,1>::Construct )
+,		SchemaEntry("ifctextliteral",&STEP::ObjectHelper<IfcTextLiteral,3>::Construct )
+,		SchemaEntry("ifccartesiantransformationoperator",&STEP::ObjectHelper<IfcCartesianTransformationOperator,4>::Construct )
+,		SchemaEntry("ifccostvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctextstyle",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifclineardimension",&STEP::ObjectHelper<IfcLinearDimension,0>::Construct )
+,		SchemaEntry("ifcdampertype",&STEP::ObjectHelper<IfcDamperType,1>::Construct )
+,		SchemaEntry("ifcsiunit",&STEP::ObjectHelper<IfcSIUnit,2>::Construct )
+,		SchemaEntry("ifcsurfacestylelighting",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcmeasurewithunit",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcmateriallayerset",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdistributionelement",&STEP::ObjectHelper<IfcDistributionElement,0>::Construct )
+,		SchemaEntry("ifcdistributioncontrolelement",&STEP::ObjectHelper<IfcDistributionControlElement,1>::Construct )
+,		SchemaEntry("ifctransformertype",&STEP::ObjectHelper<IfcTransformerType,1>::Construct )
+,		SchemaEntry("ifclaborresource",&STEP::ObjectHelper<IfcLaborResource,1>::Construct )
+,		SchemaEntry("ifcderivedprofiledef",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelconnectsstructuralmember",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelconnectswitheccentricity",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcfurniturestandard",&STEP::ObjectHelper<IfcFurnitureStandard,0>::Construct )
+,		SchemaEntry("ifcstairflighttype",&STEP::ObjectHelper<IfcStairFlightType,1>::Construct )
+,		SchemaEntry("ifcworkcontrol",&STEP::ObjectHelper<IfcWorkControl,10>::Construct )
+,		SchemaEntry("ifcworkplan",&STEP::ObjectHelper<IfcWorkPlan,0>::Construct )
+,		SchemaEntry("ifcreldefines",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcreldefinesbyproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccondition",&STEP::ObjectHelper<IfcCondition,0>::Construct )
+,		SchemaEntry("ifcgridaxis",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelvoidselement",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcwindow",&STEP::ObjectHelper<IfcWindow,2>::Construct )
+,		SchemaEntry("ifcrelflowcontrolelements",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelconnectsporttoelement",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcprotectivedevicetype",&STEP::ObjectHelper<IfcProtectiveDeviceType,1>::Construct )
+,		SchemaEntry("ifcjunctionboxtype",&STEP::ObjectHelper<IfcJunctionBoxType,1>::Construct )
+,		SchemaEntry("ifcstructuralanalysismodel",&STEP::ObjectHelper<IfcStructuralAnalysisModel,4>::Construct )
+,		SchemaEntry("ifcaxis2placement2d",&STEP::ObjectHelper<IfcAxis2Placement2D,1>::Construct )
+,		SchemaEntry("ifcspacetype",&STEP::ObjectHelper<IfcSpaceType,1>::Construct )
+,		SchemaEntry("ifcellipseprofiledef",&STEP::ObjectHelper<IfcEllipseProfileDef,2>::Construct )
+,		SchemaEntry("ifcdistributionflowelement",&STEP::ObjectHelper<IfcDistributionFlowElement,0>::Construct )
+,		SchemaEntry("ifcflowmovingdevice",&STEP::ObjectHelper<IfcFlowMovingDevice,0>::Construct )
+,		SchemaEntry("ifcsurfacestylewithtextures",&STEP::ObjectHelper<IfcSurfaceStyleWithTextures,1>::Construct )
+,		SchemaEntry("ifcgeometricset",&STEP::ObjectHelper<IfcGeometricSet,1>::Construct )
+,		SchemaEntry("ifcmechanicalmaterialproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcmechanicalconcretematerialproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcribplateprofileproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdocumentinformationrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcprojectorder",&STEP::ObjectHelper<IfcProjectOrder,3>::Construct )
+,		SchemaEntry("ifcbsplinecurve",&STEP::ObjectHelper<IfcBSplineCurve,5>::Construct )
+,		SchemaEntry("ifcbeziercurve",&STEP::ObjectHelper<IfcBezierCurve,0>::Construct )
+,		SchemaEntry("ifcstructuralpointconnection",&STEP::ObjectHelper<IfcStructuralPointConnection,0>::Construct )
+,		SchemaEntry("ifcflowcontroller",&STEP::ObjectHelper<IfcFlowController,0>::Construct )
+,		SchemaEntry("ifcelectricdistributionpoint",&STEP::ObjectHelper<IfcElectricDistributionPoint,2>::Construct )
+,		SchemaEntry("ifcsite",&STEP::ObjectHelper<IfcSite,5>::Construct )
+,		SchemaEntry("ifcoffsetcurve3d",&STEP::ObjectHelper<IfcOffsetCurve3D,4>::Construct )
+,		SchemaEntry("ifcpropertyset",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcconnectionsurfacegeometry",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcvirtualelement",&STEP::ObjectHelper<IfcVirtualElement,0>::Construct )
+,		SchemaEntry("ifcconstructionproductresource",&STEP::ObjectHelper<IfcConstructionProductResource,0>::Construct )
+,		SchemaEntry("ifcwaterproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsurfacecurvesweptareasolid",&STEP::ObjectHelper<IfcSurfaceCurveSweptAreaSolid,4>::Construct )
+,		SchemaEntry("ifcpermeablecoveringproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccartesiantransformationoperator3d",&STEP::ObjectHelper<IfcCartesianTransformationOperator3D,1>::Construct )
+,		SchemaEntry("ifccartesiantransformationoperator3dnonuniform",&STEP::ObjectHelper<IfcCartesianTransformationOperator3DnonUniform,2>::Construct )
+,		SchemaEntry("ifccrewresource",&STEP::ObjectHelper<IfcCrewResource,0>::Construct )
+,		SchemaEntry("ifcstructuralsurfacemember",&STEP::ObjectHelper<IfcStructuralSurfaceMember,2>::Construct )
+,		SchemaEntry("ifc2dcompositecurve",&STEP::ObjectHelper<Ifc2DCompositeCurve,0>::Construct )
+,		SchemaEntry("ifcrepresentationcontext",&STEP::ObjectHelper<IfcRepresentationContext,2>::Construct )
+,		SchemaEntry("ifcgeometricrepresentationcontext",&STEP::ObjectHelper<IfcGeometricRepresentationContext,4>::Construct )
+,		SchemaEntry("ifcflowtreatmentdevice",&STEP::ObjectHelper<IfcFlowTreatmentDevice,0>::Construct )
+,		SchemaEntry("ifctextstylefordefinedfont",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrightcircularcylinder",&STEP::ObjectHelper<IfcRightCircularCylinder,2>::Construct )
+,		SchemaEntry("ifcwasteterminaltype",&STEP::ObjectHelper<IfcWasteTerminalType,1>::Construct )
+,		SchemaEntry("ifcspacethermalloadproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcconstraintrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcbuildingelementcomponent",&STEP::ObjectHelper<IfcBuildingElementComponent,0>::Construct )
+,		SchemaEntry("ifcbuildingelementpart",&STEP::ObjectHelper<IfcBuildingElementPart,0>::Construct )
+,		SchemaEntry("ifcwall",&STEP::ObjectHelper<IfcWall,0>::Construct )
+,		SchemaEntry("ifcwallstandardcase",&STEP::ObjectHelper<IfcWallStandardCase,0>::Construct )
+,		SchemaEntry("ifcapprovalactorrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpath",&STEP::ObjectHelper<IfcPath,1>::Construct )
+,		SchemaEntry("ifcdefinedsymbol",&STEP::ObjectHelper<IfcDefinedSymbol,2>::Construct )
+,		SchemaEntry("ifcstructuralsurfacemembervarying",&STEP::ObjectHelper<IfcStructuralSurfaceMemberVarying,2>::Construct )
+,		SchemaEntry("ifcpoint",&STEP::ObjectHelper<IfcPoint,0>::Construct )
+,		SchemaEntry("ifcsurfaceofrevolution",&STEP::ObjectHelper<IfcSurfaceOfRevolution,1>::Construct )
+,		SchemaEntry("ifcflowterminal",&STEP::ObjectHelper<IfcFlowTerminal,0>::Construct )
+,		SchemaEntry("ifcfurnishingelement",&STEP::ObjectHelper<IfcFurnishingElement,0>::Construct )
+,		SchemaEntry("ifccurvestylefont",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsurfacestyleshading",&STEP::ObjectHelper<IfcSurfaceStyleShading,1>::Construct )
+,		SchemaEntry("ifcsurfacestylerendering",&STEP::ObjectHelper<IfcSurfaceStyleRendering,8>::Construct )
+,		SchemaEntry("ifccoordinateduniversaltimeoffset",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralloadsingledisplacement",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccirclehollowprofiledef",&STEP::ObjectHelper<IfcCircleHollowProfileDef,1>::Construct )
+,		SchemaEntry("ifcflowmovingdevicetype",&STEP::ObjectHelper<IfcFlowMovingDeviceType,0>::Construct )
+,		SchemaEntry("ifcfantype",&STEP::ObjectHelper<IfcFanType,1>::Construct )
+,		SchemaEntry("ifcstructuralplanaractionvarying",&STEP::ObjectHelper<IfcStructuralPlanarActionVarying,2>::Construct )
+,		SchemaEntry("ifcproductrepresentation",&STEP::ObjectHelper<IfcProductRepresentation,3>::Construct )
+,		SchemaEntry("ifcreldefinesbytype",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpredefinedtextfont",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctextstylefontmodel",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstackterminaltype",&STEP::ObjectHelper<IfcStackTerminalType,1>::Construct )
+,		SchemaEntry("ifcapprovalpropertyrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcexternallydefinedsymbol",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcreinforcingelement",&STEP::ObjectHelper<IfcReinforcingElement,1>::Construct )
+,		SchemaEntry("ifcreinforcingmesh",&STEP::ObjectHelper<IfcReinforcingMesh,8>::Construct )
+,		SchemaEntry("ifcorderaction",&STEP::ObjectHelper<IfcOrderAction,1>::Construct )
+,		SchemaEntry("ifcrelcoversbldgelements",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifclightsource",&STEP::ObjectHelper<IfcLightSource,4>::Construct )
+,		SchemaEntry("ifclightsourcedirectional",&STEP::ObjectHelper<IfcLightSourceDirectional,1>::Construct )
+,		SchemaEntry("ifcloop",&STEP::ObjectHelper<IfcLoop,0>::Construct )
+,		SchemaEntry("ifcvertexloop",&STEP::ObjectHelper<IfcVertexLoop,1>::Construct )
+,		SchemaEntry("ifcchamferedgefeature",&STEP::ObjectHelper<IfcChamferEdgeFeature,2>::Construct )
+,		SchemaEntry("ifcwindowpanelproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcclassification",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelementcomponenttype",&STEP::ObjectHelper<IfcElementComponentType,0>::Construct )
+,		SchemaEntry("ifcfastenertype",&STEP::ObjectHelper<IfcFastenerType,0>::Construct )
+,		SchemaEntry("ifcmechanicalfastenertype",&STEP::ObjectHelper<IfcMechanicalFastenerType,0>::Construct )
+,		SchemaEntry("ifcscheduletimecontrol",&STEP::ObjectHelper<IfcScheduleTimeControl,18>::Construct )
+,		SchemaEntry("ifcsurfacestyle",&STEP::ObjectHelper<IfcSurfaceStyle,2>::Construct )
+,		SchemaEntry("ifcreinforcementbarproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcopenshell",&STEP::ObjectHelper<IfcOpenShell,0>::Construct )
+,		SchemaEntry("ifclibraryreference",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsubcontractresource",&STEP::ObjectHelper<IfcSubContractResource,2>::Construct )
+,		SchemaEntry("ifctimeseriesreferencerelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsweptdisksolid",&STEP::ObjectHelper<IfcSweptDiskSolid,5>::Construct )
+,		SchemaEntry("ifccompositeprofiledef",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelectricalbaseproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpredefinedpointmarkersymbol",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctanktype",&STEP::ObjectHelper<IfcTankType,1>::Construct )
+,		SchemaEntry("ifcboundarynodecondition",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcboundarynodeconditionwarping",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassignstogroup",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpresentationlayerassignment",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsphere",&STEP::ObjectHelper<IfcSphere,1>::Construct )
+,		SchemaEntry("ifcpolyloop",&STEP::ObjectHelper<IfcPolyLoop,1>::Construct )
+,		SchemaEntry("ifccablecarrierfittingtype",&STEP::ObjectHelper<IfcCableCarrierFittingType,1>::Construct )
+,		SchemaEntry("ifchumidifiertype",&STEP::ObjectHelper<IfcHumidifierType,1>::Construct )
+,		SchemaEntry("ifcpropertylistvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpropertyconstraintrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcperformancehistory",&STEP::ObjectHelper<IfcPerformanceHistory,1>::Construct )
+,		SchemaEntry("ifcshapemodel",&STEP::ObjectHelper<IfcShapeModel,0>::Construct )
+,		SchemaEntry("ifctopologyrepresentation",&STEP::ObjectHelper<IfcTopologyRepresentation,0>::Construct )
+,		SchemaEntry("ifcbuilding",&STEP::ObjectHelper<IfcBuilding,3>::Construct )
+,		SchemaEntry("ifcroundedrectangleprofiledef",&STEP::ObjectHelper<IfcRoundedRectangleProfileDef,1>::Construct )
+,		SchemaEntry("ifcstairflight",&STEP::ObjectHelper<IfcStairFlight,4>::Construct )
+,		SchemaEntry("ifcsurfacestylerefraction",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelinteractionrequirements",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcconstraint",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcobjective",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcconnectionportgeometry",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdistributionchamberelement",&STEP::ObjectHelper<IfcDistributionChamberElement,0>::Construct )
+,		SchemaEntry("ifcpersonandorganization",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcshaperepresentation",&STEP::ObjectHelper<IfcShapeRepresentation,0>::Construct )
+,		SchemaEntry("ifcrampflight",&STEP::ObjectHelper<IfcRampFlight,0>::Construct )
+,		SchemaEntry("ifcbeamtype",&STEP::ObjectHelper<IfcBeamType,1>::Construct )
+,		SchemaEntry("ifcreldecomposes",&STEP::ObjectHelper<IfcRelDecomposes,2>::Construct )
+,		SchemaEntry("ifcroof",&STEP::ObjectHelper<IfcRoof,1>::Construct )
+,		SchemaEntry("ifcfooting",&STEP::ObjectHelper<IfcFooting,1>::Construct )
+,		SchemaEntry("ifcrelcoversspaces",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifclightsourceambient",&STEP::ObjectHelper<IfcLightSourceAmbient,0>::Construct )
+,		SchemaEntry("ifctimeseriesvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcwindowstyle",&STEP::ObjectHelper<IfcWindowStyle,4>::Construct )
+,		SchemaEntry("ifcpropertyreferencevalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcapproval",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelconnectsstructuralelement",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcbuildingelementproxytype",&STEP::ObjectHelper<IfcBuildingElementProxyType,1>::Construct )
+,		SchemaEntry("ifcrelassociatesprofileproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcaxis2placement3d",&STEP::ObjectHelper<IfcAxis2Placement3D,2>::Construct )
+,		SchemaEntry("ifcrelconnectsports",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcedgecurve",&STEP::ObjectHelper<IfcEdgeCurve,2>::Construct )
+,		SchemaEntry("ifcclosedshell",&STEP::ObjectHelper<IfcClosedShell,0>::Construct )
+,		SchemaEntry("ifctendonanchor",&STEP::ObjectHelper<IfcTendonAnchor,0>::Construct )
+,		SchemaEntry("ifccondensertype",&STEP::ObjectHelper<IfcCondenserType,1>::Construct )
+,		SchemaEntry("ifcquantitytime",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsurfacetexture",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpixeltexture",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralconnectioncondition",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcfailureconnectioncondition",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdocumentreference",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcmechanicalsteelmaterialproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpipesegmenttype",&STEP::ObjectHelper<IfcPipeSegmentType,1>::Construct )
+,		SchemaEntry("ifcpointonsurface",&STEP::ObjectHelper<IfcPointOnSurface,3>::Construct )
+,		SchemaEntry("ifctable",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifclightdistributiondata",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpropertytablevalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpresentationlayerwithstyle",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcasset",&STEP::ObjectHelper<IfcAsset,9>::Construct )
+,		SchemaEntry("ifclightsourcepositional",&STEP::ObjectHelper<IfcLightSourcePositional,5>::Construct )
+,		SchemaEntry("ifclibraryinformation",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctextstyletextmodel",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcprojectioncurve",&STEP::ObjectHelper<IfcProjectionCurve,0>::Construct )
+,		SchemaEntry("ifcfillareastyletiles",&STEP::ObjectHelper<IfcFillAreaStyleTiles,3>::Construct )
+,		SchemaEntry("ifcrelfillselement",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelectricmotortype",&STEP::ObjectHelper<IfcElectricMotorType,1>::Construct )
+,		SchemaEntry("ifctendon",&STEP::ObjectHelper<IfcTendon,8>::Construct )
+,		SchemaEntry("ifcdistributionchamberelementtype",&STEP::ObjectHelper<IfcDistributionChamberElementType,1>::Construct )
+,		SchemaEntry("ifcmembertype",&STEP::ObjectHelper<IfcMemberType,1>::Construct )
+,		SchemaEntry("ifcstructurallinearaction",&STEP::ObjectHelper<IfcStructuralLinearAction,1>::Construct )
+,		SchemaEntry("ifcstructurallinearactionvarying",&STEP::ObjectHelper<IfcStructuralLinearActionVarying,2>::Construct )
+,		SchemaEntry("ifcproductdefinitionshape",&STEP::ObjectHelper<IfcProductDefinitionShape,0>::Construct )
+,		SchemaEntry("ifcfastener",&STEP::ObjectHelper<IfcFastener,0>::Construct )
+,		SchemaEntry("ifcmechanicalfastener",&STEP::ObjectHelper<IfcMechanicalFastener,2>::Construct )
+,		SchemaEntry("ifcfuelproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcevaporatortype",&STEP::ObjectHelper<IfcEvaporatorType,1>::Construct )
+,		SchemaEntry("ifcmateriallayersetusage",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdiscreteaccessorytype",&STEP::ObjectHelper<IfcDiscreteAccessoryType,0>::Construct )
+,		SchemaEntry("ifcstructuralcurveconnection",&STEP::ObjectHelper<IfcStructuralCurveConnection,0>::Construct )
+,		SchemaEntry("ifcprojectionelement",&STEP::ObjectHelper<IfcProjectionElement,0>::Construct )
+,		SchemaEntry("ifcimagetexture",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccoveringtype",&STEP::ObjectHelper<IfcCoveringType,1>::Construct )
+,		SchemaEntry("ifcrelassociatesappliedvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpumptype",&STEP::ObjectHelper<IfcPumpType,1>::Construct )
+,		SchemaEntry("ifcpile",&STEP::ObjectHelper<IfcPile,2>::Construct )
+,		SchemaEntry("ifcunitassignment",&STEP::ObjectHelper<IfcUnitAssignment,1>::Construct )
+,		SchemaEntry("ifcboundingbox",&STEP::ObjectHelper<IfcBoundingBox,4>::Construct )
+,		SchemaEntry("ifcshellbasedsurfacemodel",&STEP::ObjectHelper<IfcShellBasedSurfaceModel,1>::Construct )
+,		SchemaEntry("ifcfacetedbrep",&STEP::ObjectHelper<IfcFacetedBrep,0>::Construct )
+,		SchemaEntry("ifctextliteralwithextent",&STEP::ObjectHelper<IfcTextLiteralWithExtent,2>::Construct )
+,		SchemaEntry("ifcapplication",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcextendedmaterialproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelectricappliancetype",&STEP::ObjectHelper<IfcElectricApplianceType,1>::Construct )
+,		SchemaEntry("ifcreloccupiesspaces",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctrapeziumprofiledef",&STEP::ObjectHelper<IfcTrapeziumProfileDef,4>::Construct )
+,		SchemaEntry("ifcquantityweight",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelcontainedinspatialstructure",&STEP::ObjectHelper<IfcRelContainedInSpatialStructure,2>::Construct )
+,		SchemaEntry("ifcedgeloop",&STEP::ObjectHelper<IfcEdgeLoop,1>::Construct )
+,		SchemaEntry("ifcproject",&STEP::ObjectHelper<IfcProject,4>::Construct )
+,		SchemaEntry("ifccartesianpoint",&STEP::ObjectHelper<IfcCartesianPoint,1>::Construct )
+,		SchemaEntry("ifcmaterial",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccurveboundedplane",&STEP::ObjectHelper<IfcCurveBoundedPlane,3>::Construct )
+,		SchemaEntry("ifcwalltype",&STEP::ObjectHelper<IfcWallType,1>::Construct )
+,		SchemaEntry("ifcfillareastylehatching",&STEP::ObjectHelper<IfcFillAreaStyleHatching,5>::Construct )
+,		SchemaEntry("ifcequipmentstandard",&STEP::ObjectHelper<IfcEquipmentStandard,0>::Construct )
+,		SchemaEntry("ifchygroscopicmaterialproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdoorpanelproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdiameterdimension",&STEP::ObjectHelper<IfcDiameterDimension,0>::Construct )
+,		SchemaEntry("ifcstructuralloadgroup",&STEP::ObjectHelper<IfcStructuralLoadGroup,5>::Construct )
+,		SchemaEntry("ifctelecomaddress",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcconstructionmaterialresource",&STEP::ObjectHelper<IfcConstructionMaterialResource,2>::Construct )
+,		SchemaEntry("ifcblobtexture",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcirregulartimeseriesvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelaggregates",&STEP::ObjectHelper<IfcRelAggregates,0>::Construct )
+,		SchemaEntry("ifcboilertype",&STEP::ObjectHelper<IfcBoilerType,1>::Construct )
+,		SchemaEntry("ifcrelprojectselement",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccolourspecification",&STEP::ObjectHelper<IfcColourSpecification,1>::Construct )
+,		SchemaEntry("ifccolourrgb",&STEP::ObjectHelper<IfcColourRgb,3>::Construct )
+,		SchemaEntry("ifcrelconnectsstructuralactivity",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdoorstyle",&STEP::ObjectHelper<IfcDoorStyle,4>::Construct )
+,		SchemaEntry("ifcstructuralloadsingledisplacementdistortion",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassignstoprocess",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcductsilencertype",&STEP::ObjectHelper<IfcDuctSilencerType,1>::Construct )
+,		SchemaEntry("ifclightsourcegoniometric",&STEP::ObjectHelper<IfcLightSourceGoniometric,6>::Construct )
+,		SchemaEntry("ifcactuatortype",&STEP::ObjectHelper<IfcActuatorType,1>::Construct )
+,		SchemaEntry("ifcsensortype",&STEP::ObjectHelper<IfcSensorType,1>::Construct )
+,		SchemaEntry("ifcairterminalboxtype",&STEP::ObjectHelper<IfcAirTerminalBoxType,1>::Construct )
+,		SchemaEntry("ifcannotationsurfaceoccurrence",&STEP::ObjectHelper<IfcAnnotationSurfaceOccurrence,0>::Construct )
+,		SchemaEntry("ifczshapeprofiledef",&STEP::ObjectHelper<IfcZShapeProfileDef,6>::Construct )
+,		SchemaEntry("ifcclassificationnotation",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrationalbeziercurve",&STEP::ObjectHelper<IfcRationalBezierCurve,1>::Construct )
+,		SchemaEntry("ifccartesiantransformationoperator2d",&STEP::ObjectHelper<IfcCartesianTransformationOperator2D,0>::Construct )
+,		SchemaEntry("ifccartesiantransformationoperator2dnonuniform",&STEP::ObjectHelper<IfcCartesianTransformationOperator2DnonUniform,1>::Construct )
+,		SchemaEntry("ifcmove",&STEP::ObjectHelper<IfcMove,3>::Construct )
+,		SchemaEntry("ifcboundaryedgecondition",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdoorliningproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccablecarriersegmenttype",&STEP::ObjectHelper<IfcCableCarrierSegmentType,1>::Construct )
+,		SchemaEntry("ifcpostaladdress",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelconnectspathelements",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelectricalelement",&STEP::ObjectHelper<IfcElectricalElement,0>::Construct )
+,		SchemaEntry("ifcownerhistory",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralloadtemperature",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctextstylewithboxcharacteristics",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcchillertype",&STEP::ObjectHelper<IfcChillerType,1>::Construct )
+,		SchemaEntry("ifcrelschedulescostitems",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcreinforcingbar",&STEP::ObjectHelper<IfcReinforcingBar,5>::Construct )
+,		SchemaEntry("ifccurrencyrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsoundvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccshapeprofiledef",&STEP::ObjectHelper<IfcCShapeProfileDef,6>::Construct )
+,		SchemaEntry("ifcpermit",&STEP::ObjectHelper<IfcPermit,1>::Construct )
+,		SchemaEntry("ifcslabtype",&STEP::ObjectHelper<IfcSlabType,1>::Construct )
+,		SchemaEntry("ifcslippageconnectioncondition",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifclamptype",&STEP::ObjectHelper<IfcLampType,1>::Construct )
+,		SchemaEntry("ifcplanarextent",&STEP::ObjectHelper<IfcPlanarExtent,2>::Construct )
+,		SchemaEntry("ifcalarmtype",&STEP::ObjectHelper<IfcAlarmType,1>::Construct )
+,		SchemaEntry("ifcdocumentelectronicformat",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelectricflowstoragedevicetype",&STEP::ObjectHelper<IfcElectricFlowStorageDeviceType,1>::Construct )
+,		SchemaEntry("ifcequipmentelement",&STEP::ObjectHelper<IfcEquipmentElement,0>::Construct )
+,		SchemaEntry("ifclightfixturetype",&STEP::ObjectHelper<IfcLightFixtureType,1>::Construct )
+,		SchemaEntry("ifcmetric",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelnests",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccurtainwall",&STEP::ObjectHelper<IfcCurtainWall,0>::Construct )
+,		SchemaEntry("ifcrelassociatesdocument",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccomplexproperty",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcvertexbasedtexturemap",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcslab",&STEP::ObjectHelper<IfcSlab,1>::Construct )
+,		SchemaEntry("ifccurtainwalltype",&STEP::ObjectHelper<IfcCurtainWallType,1>::Construct )
+,		SchemaEntry("ifcoutlettype",&STEP::ObjectHelper<IfcOutletType,1>::Construct )
+,		SchemaEntry("ifccompressortype",&STEP::ObjectHelper<IfcCompressorType,1>::Construct )
+,		SchemaEntry("ifccranerailashapeprofiledef",&STEP::ObjectHelper<IfcCraneRailAShapeProfileDef,12>::Construct )
+,		SchemaEntry("ifcflowsegment",&STEP::ObjectHelper<IfcFlowSegment,0>::Construct )
+,		SchemaEntry("ifcsectionedspine",&STEP::ObjectHelper<IfcSectionedSpine,3>::Construct )
+,		SchemaEntry("ifctablerow",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdraughtingpredefinedtextfont",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelectrictimecontroltype",&STEP::ObjectHelper<IfcElectricTimeControlType,1>::Construct )
+,		SchemaEntry("ifcfacesurface",&STEP::ObjectHelper<IfcFaceSurface,2>::Construct )
+,		SchemaEntry("ifcmateriallist",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcmotorconnectiontype",&STEP::ObjectHelper<IfcMotorConnectionType,1>::Construct )
+,		SchemaEntry("ifcflowfitting",&STEP::ObjectHelper<IfcFlowFitting,0>::Construct )
+,		SchemaEntry("ifcpointoncurve",&STEP::ObjectHelper<IfcPointOnCurve,2>::Construct )
+,		SchemaEntry("ifctransportelementtype",&STEP::ObjectHelper<IfcTransportElementType,1>::Construct )
+,		SchemaEntry("ifcregulartimeseries",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassociatesconstraint",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcpropertyenumeratedvalue",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcstructuralsteelprofileproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccablesegmenttype",&STEP::ObjectHelper<IfcCableSegmentType,1>::Construct )
+,		SchemaEntry("ifcexternallydefinedhatchstyle",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcannotationsurface",&STEP::ObjectHelper<IfcAnnotationSurface,2>::Construct )
+,		SchemaEntry("ifccompositecurvesegment",&STEP::ObjectHelper<IfcCompositeCurveSegment,3>::Construct )
+,		SchemaEntry("ifcservicelife",&STEP::ObjectHelper<IfcServiceLife,2>::Construct )
+,		SchemaEntry("ifcplatetype",&STEP::ObjectHelper<IfcPlateType,1>::Construct )
+,		SchemaEntry("ifccurvestyle",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcsectionproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcvibrationisolatortype",&STEP::ObjectHelper<IfcVibrationIsolatorType,1>::Construct )
+,		SchemaEntry("ifctexturemap",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctrimmedcurve",&STEP::ObjectHelper<IfcTrimmedCurve,5>::Construct )
+,		SchemaEntry("ifcmappeditem",&STEP::ObjectHelper<IfcMappedItem,2>::Construct )
+,		SchemaEntry("ifcmateriallayer",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdirection",&STEP::ObjectHelper<IfcDirection,1>::Construct )
+,		SchemaEntry("ifcblock",&STEP::ObjectHelper<IfcBlock,3>::Construct )
+,		SchemaEntry("ifcprojectorderrecord",&STEP::ObjectHelper<IfcProjectOrderRecord,2>::Construct )
+,		SchemaEntry("ifcflowmetertype",&STEP::ObjectHelper<IfcFlowMeterType,1>::Construct )
+,		SchemaEntry("ifccontrollertype",&STEP::ObjectHelper<IfcControllerType,1>::Construct )
+,		SchemaEntry("ifcbeam",&STEP::ObjectHelper<IfcBeam,0>::Construct )
+,		SchemaEntry("ifcarbitraryopenprofiledef",&STEP::ObjectHelper<IfcArbitraryOpenProfileDef,1>::Construct )
+,		SchemaEntry("ifccenterlineprofiledef",&STEP::ObjectHelper<IfcCenterLineProfileDef,1>::Construct )
+,		SchemaEntry("ifcstructuralloadplanarforce",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifctimeseriesschedule",&STEP::ObjectHelper<IfcTimeSeriesSchedule,3>::Construct )
+,		SchemaEntry("ifcroundededgefeature",&STEP::ObjectHelper<IfcRoundedEdgeFeature,1>::Construct )
+,		SchemaEntry("ifcwindowliningproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcreloverridesproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcapprovalrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcishapeprofiledef",&STEP::ObjectHelper<IfcIShapeProfileDef,5>::Construct )
+,		SchemaEntry("ifcspaceheatertype",&STEP::ObjectHelper<IfcSpaceHeaterType,1>::Construct )
+,		SchemaEntry("ifcexternallydefinedsurfacestyle",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcderivedunit",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcflowstoragedevice",&STEP::ObjectHelper<IfcFlowStorageDevice,0>::Construct )
+,		SchemaEntry("ifcmaterialclassificationrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcclassificationitem",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrevolvedareasolid",&STEP::ObjectHelper<IfcRevolvedAreaSolid,2>::Construct )
+,		SchemaEntry("ifcconnectionpointgeometry",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdoor",&STEP::ObjectHelper<IfcDoor,2>::Construct )
+,		SchemaEntry("ifcellipse",&STEP::ObjectHelper<IfcEllipse,2>::Construct )
+,		SchemaEntry("ifctubebundletype",&STEP::ObjectHelper<IfcTubeBundleType,1>::Construct )
+,		SchemaEntry("ifcangulardimension",&STEP::ObjectHelper<IfcAngularDimension,0>::Construct )
+,		SchemaEntry("ifcthermalmaterialproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcfacebasedsurfacemodel",&STEP::ObjectHelper<IfcFaceBasedSurfaceModel,1>::Construct )
+,		SchemaEntry("ifccranerailfshapeprofiledef",&STEP::ObjectHelper<IfcCraneRailFShapeProfileDef,9>::Construct )
+,		SchemaEntry("ifccolumntype",&STEP::ObjectHelper<IfcColumnType,1>::Construct )
+,		SchemaEntry("ifctshapeprofiledef",&STEP::ObjectHelper<IfcTShapeProfileDef,10>::Construct )
+,		SchemaEntry("ifcenergyconversiondevice",&STEP::ObjectHelper<IfcEnergyConversionDevice,0>::Construct )
+,		SchemaEntry("ifcconnectionpointeccentricity",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcreinforcementdefinitionproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccurvestylefontandscaling",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcworkschedule",&STEP::ObjectHelper<IfcWorkSchedule,0>::Construct )
+,		SchemaEntry("ifcorganizationrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifczone",&STEP::ObjectHelper<IfcZone,0>::Construct )
+,		SchemaEntry("ifctransportelement",&STEP::ObjectHelper<IfcTransportElement,3>::Construct )
+,		SchemaEntry("ifcdraughtingpredefinedcurvefont",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcgeometricrepresentationsubcontext",&STEP::ObjectHelper<IfcGeometricRepresentationSubContext,4>::Construct )
+,		SchemaEntry("ifclshapeprofiledef",&STEP::ObjectHelper<IfcLShapeProfileDef,8>::Construct )
+,		SchemaEntry("ifcgeometriccurveset",&STEP::ObjectHelper<IfcGeometricCurveSet,0>::Construct )
+,		SchemaEntry("ifcactor",&STEP::ObjectHelper<IfcActor,1>::Construct )
+,		SchemaEntry("ifcoccupant",&STEP::ObjectHelper<IfcOccupant,1>::Construct )
+,		SchemaEntry("ifcphysicalcomplexquantity",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcbooleanclippingresult",&STEP::ObjectHelper<IfcBooleanClippingResult,0>::Construct )
+,		SchemaEntry("ifcpredefinedterminatorsymbol",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcannotationfillarea",&STEP::ObjectHelper<IfcAnnotationFillArea,2>::Construct )
+,		SchemaEntry("ifcconstraintaggregationrelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassociatesapproval",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassociatesmaterial",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelassignstoproduct",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcappliedvaluerelationship",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifclightsourcespot",&STEP::ObjectHelper<IfcLightSourceSpot,4>::Construct )
+,		SchemaEntry("ifcfiresuppressionterminaltype",&STEP::ObjectHelper<IfcFireSuppressionTerminalType,1>::Construct )
+,		SchemaEntry("ifcelementquantity",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdimensionpair",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcelectricgeneratortype",&STEP::ObjectHelper<IfcElectricGeneratorType,1>::Construct )
+,		SchemaEntry("ifcrelsequence",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcinventory",&STEP::ObjectHelper<IfcInventory,6>::Construct )
+,		SchemaEntry("ifcpolyline",&STEP::ObjectHelper<IfcPolyline,1>::Construct )
+,		SchemaEntry("ifcboxedhalfspace",&STEP::ObjectHelper<IfcBoxedHalfSpace,1>::Construct )
+,		SchemaEntry("ifcairterminaltype",&STEP::ObjectHelper<IfcAirTerminalType,1>::Construct )
+,		SchemaEntry("ifcsectionreinforcementproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcdistributionport",&STEP::ObjectHelper<IfcDistributionPort,1>::Construct )
+,		SchemaEntry("ifccostitem",&STEP::ObjectHelper<IfcCostItem,0>::Construct )
+,		SchemaEntry("ifcstructureddimensioncallout",&STEP::ObjectHelper<IfcStructuredDimensionCallout,0>::Construct )
+,		SchemaEntry("ifcstructuralresultgroup",&STEP::ObjectHelper<IfcStructuralResultGroup,3>::Construct )
+,		SchemaEntry("ifcrelspaceboundary",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcorientededge",&STEP::ObjectHelper<IfcOrientedEdge,2>::Construct )
+,		SchemaEntry("ifcrelassignstoresource",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifccsgsolid",&STEP::ObjectHelper<IfcCsgSolid,1>::Construct )
+,		SchemaEntry("ifcproductsofcombustionproperties",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcrelaxation",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcplanarbox",&STEP::ObjectHelper<IfcPlanarBox,1>::Construct )
+,		SchemaEntry("ifcquantitylength",&STEP::ObjectHelper<NotImplemented,0>::Construct )
+,		SchemaEntry("ifcmaterialdefinitionrepresentation",&STEP::ObjectHelper<IfcMaterialDefinitionRepresentation,1>::Construct )
+,		SchemaEntry("ifcasymmetricishapeprofiledef",&STEP::ObjectHelper<IfcAsymmetricIShapeProfileDef,4>::Construct )
+,		SchemaEntry("ifcrepresentationmap",&STEP::ObjectHelper<IfcRepresentationMap,2>::Construct )
+
+	};
+}
+
+// -----------------------------------------------------------------------------------------------------------
+void IFC::GetSchema(EXPRESS::ConversionSchema& out)
+{
+	out = EXPRESS::ConversionSchema(schema_raw);
+}
+
+namespace STEP {
+
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<NotImplemented>(const STEP::DB& db, const LIST& params, NotImplemented* in)
+{
+	return 0;
+}
+
+
+
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRoot>(const DB& db, const LIST& params, IfcRoot* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 4) { throw STEP::TypeError("expected 4 arguments to IfcRoot"); }    do { // convert the 'GlobalId' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRoot,4>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->GlobalId, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcRoot to be a `IfcGloballyUniqueId`")); }
+    } while(0);
+    do { // convert the 'OwnerHistory' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRoot,4>::aux_is_derived[1]=true; break; }
+        try { GenericConvert( in->OwnerHistory, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcRoot to be a `IfcOwnerHistory`")); }
+    } while(0);
+    do { // convert the 'Name' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRoot,4>::aux_is_derived[2]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Name, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcRoot to be a `IfcLabel`")); }
+    } while(0);
+    do { // convert the 'Description' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRoot,4>::aux_is_derived[3]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Description, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 3 to IfcRoot to be a `IfcText`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcObjectDefinition>(const DB& db, const LIST& params, IfcObjectDefinition* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRoot*>(in));
+	if (params.GetSize() < 4) { throw STEP::TypeError("expected 4 arguments to IfcObjectDefinition"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTypeObject>(const DB& db, const LIST& params, IfcTypeObject* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObjectDefinition*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTypeProduct>(const DB& db, const LIST& params, IfcTypeProduct* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTypeObject*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElementType>(const DB& db, const LIST& params, IfcElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTypeProduct*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFurnishingElementType>(const DB& db, const LIST& params, IfcFurnishingElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFurnitureType>(const DB& db, const LIST& params, IfcFurnitureType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFurnishingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcObject>(const DB& db, const LIST& params, IfcObject* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObjectDefinition*>(in));
+	if (params.GetSize() < 5) { throw STEP::TypeError("expected 5 arguments to IfcObject"); }    do { // convert the 'ObjectType' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcObject,1>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->ObjectType, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 4 to IfcObject to be a `IfcLabel`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProduct>(const DB& db, const LIST& params, IfcProduct* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObject*>(in));
+	if (params.GetSize() < 7) { throw STEP::TypeError("expected 7 arguments to IfcProduct"); }    do { // convert the 'ObjectPlacement' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcProduct,2>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->ObjectPlacement, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 5 to IfcProduct to be a `IfcObjectPlacement`")); }
+    } while(0);
+    do { // convert the 'Representation' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcProduct,2>::aux_is_derived[1]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Representation, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 6 to IfcProduct to be a `IfcProductRepresentation`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcGrid>(const DB& db, const LIST& params, IfcGrid* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProduct*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRepresentationItem>(const DB& db, const LIST& params, IfcRepresentationItem* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 0) { throw STEP::TypeError("expected 0 arguments to IfcRepresentationItem"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcGeometricRepresentationItem>(const DB& db, const LIST& params, IfcGeometricRepresentationItem* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRepresentationItem*>(in));
+	if (params.GetSize() < 0) { throw STEP::TypeError("expected 0 arguments to IfcGeometricRepresentationItem"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcOneDirectionRepeatFactor>(const DB& db, const LIST& params, IfcOneDirectionRepeatFactor* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTwoDirectionRepeatFactor>(const DB& db, const LIST& params, IfcTwoDirectionRepeatFactor* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcOneDirectionRepeatFactor*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElement>(const DB& db, const LIST& params, IfcElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProduct*>(in));
+	if (params.GetSize() < 8) { throw STEP::TypeError("expected 8 arguments to IfcElement"); }    do { // convert the 'Tag' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcElement,1>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Tag, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 7 to IfcElement to be a `IfcIdentifier`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElementComponent>(const DB& db, const LIST& params, IfcElementComponent* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSpatialStructureElementType>(const DB& db, const LIST& params, IfcSpatialStructureElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcControl>(const DB& db, const LIST& params, IfcControl* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObject*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcActionRequest>(const DB& db, const LIST& params, IfcActionRequest* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDistributionElementType>(const DB& db, const LIST& params, IfcDistributionElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDistributionFlowElementType>(const DB& db, const LIST& params, IfcDistributionFlowElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEnergyConversionDeviceType>(const DB& db, const LIST& params, IfcEnergyConversionDeviceType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCooledBeamType>(const DB& db, const LIST& params, IfcCooledBeamType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCsgPrimitive3D>(const DB& db, const LIST& params, IfcCsgPrimitive3D* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRectangularPyramid>(const DB& db, const LIST& params, IfcRectangularPyramid* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCsgPrimitive3D*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSurface>(const DB& db, const LIST& params, IfcSurface* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBoundedSurface>(const DB& db, const LIST& params, IfcBoundedSurface* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSurface*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRectangularTrimmedSurface>(const DB& db, const LIST& params, IfcRectangularTrimmedSurface* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBoundedSurface*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcGroup>(const DB& db, const LIST& params, IfcGroup* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObject*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRelationship>(const DB& db, const LIST& params, IfcRelationship* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRoot*>(in));
+	if (params.GetSize() < 4) { throw STEP::TypeError("expected 4 arguments to IfcRelationship"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcHalfSpaceSolid>(const DB& db, const LIST& params, IfcHalfSpaceSolid* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPolygonalBoundedHalfSpace>(const DB& db, const LIST& params, IfcPolygonalBoundedHalfSpace* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcHalfSpaceSolid*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAirToAirHeatRecoveryType>(const DB& db, const LIST& params, IfcAirToAirHeatRecoveryType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowFittingType>(const DB& db, const LIST& params, IfcFlowFittingType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPipeFittingType>(const DB& db, const LIST& params, IfcPipeFittingType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowFittingType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRepresentation>(const DB& db, const LIST& params, IfcRepresentation* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 4) { throw STEP::TypeError("expected 4 arguments to IfcRepresentation"); }    do { // convert the 'ContextOfItems' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRepresentation,4>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->ContextOfItems, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcRepresentation to be a `IfcRepresentationContext`")); }
+    } while(0);
+    do { // convert the 'RepresentationIdentifier' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRepresentation,4>::aux_is_derived[1]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->RepresentationIdentifier, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcRepresentation to be a `IfcLabel`")); }
+    } while(0);
+    do { // convert the 'RepresentationType' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRepresentation,4>::aux_is_derived[2]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->RepresentationType, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcRepresentation to be a `IfcLabel`")); }
+    } while(0);
+    do { // convert the 'Items' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRepresentation,4>::aux_is_derived[3]=true; break; }
+        try { GenericConvert( in->Items, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 3 to IfcRepresentation to be a `SET [1:?] OF IfcRepresentationItem`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStyleModel>(const DB& db, const LIST& params, IfcStyleModel* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRepresentation*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStyledRepresentation>(const DB& db, const LIST& params, IfcStyledRepresentation* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStyleModel*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBooleanResult>(const DB& db, const LIST& params, IfcBooleanResult* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+	if (params.GetSize() < 3) { throw STEP::TypeError("expected 3 arguments to IfcBooleanResult"); }    do { // convert the 'Operator' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcBooleanResult,3>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->Operator, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcBooleanResult to be a `IfcBooleanOperator`")); }
+    } while(0);
+    do { // convert the 'FirstOperand' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcBooleanResult,3>::aux_is_derived[1]=true; break; }
+        try { GenericConvert( in->FirstOperand, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcBooleanResult to be a `IfcBooleanOperand`")); }
+    } while(0);
+    do { // convert the 'SecondOperand' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcBooleanResult,3>::aux_is_derived[2]=true; break; }
+        try { GenericConvert( in->SecondOperand, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcBooleanResult to be a `IfcBooleanOperand`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFeatureElement>(const DB& db, const LIST& params, IfcFeatureElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFeatureElementSubtraction>(const DB& db, const LIST& params, IfcFeatureElementSubtraction* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFeatureElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcOpeningElement>(const DB& db, const LIST& params, IfcOpeningElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFeatureElementSubtraction*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcConditionCriterion>(const DB& db, const LIST& params, IfcConditionCriterion* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowTerminalType>(const DB& db, const LIST& params, IfcFlowTerminalType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowControllerType>(const DB& db, const LIST& params, IfcFlowControllerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSwitchingDeviceType>(const DB& db, const LIST& params, IfcSwitchingDeviceType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowControllerType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSystem>(const DB& db, const LIST& params, IfcSystem* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGroup*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElectricalCircuit>(const DB& db, const LIST& params, IfcElectricalCircuit* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSystem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcUnitaryEquipmentType>(const DB& db, const LIST& params, IfcUnitaryEquipmentType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPort>(const DB& db, const LIST& params, IfcPort* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProduct*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPlacement>(const DB& db, const LIST& params, IfcPlacement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcPlacement"); }    do { // convert the 'Location' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcPlacement,1>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->Location, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcPlacement to be a `IfcCartesianPoint`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProfileDef>(const DB& db, const LIST& params, IfcProfileDef* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 2) { throw STEP::TypeError("expected 2 arguments to IfcProfileDef"); }    do { // convert the 'ProfileType' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcProfileDef,2>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->ProfileType, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcProfileDef to be a `IfcProfileTypeEnum`")); }
+    } while(0);
+    do { // convert the 'ProfileName' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcProfileDef,2>::aux_is_derived[1]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->ProfileName, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcProfileDef to be a `IfcLabel`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcArbitraryClosedProfileDef>(const DB& db, const LIST& params, IfcArbitraryClosedProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProfileDef*>(in));
+	if (params.GetSize() < 3) { throw STEP::TypeError("expected 3 arguments to IfcArbitraryClosedProfileDef"); }    do { // convert the 'OuterCurve' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcArbitraryClosedProfileDef,1>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->OuterCurve, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcArbitraryClosedProfileDef to be a `IfcCurve`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCurve>(const DB& db, const LIST& params, IfcCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+	if (params.GetSize() < 0) { throw STEP::TypeError("expected 0 arguments to IfcCurve"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcConic>(const DB& db, const LIST& params, IfcConic* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCircle>(const DB& db, const LIST& params, IfcCircle* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConic*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElementarySurface>(const DB& db, const LIST& params, IfcElementarySurface* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSurface*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPlane>(const DB& db, const LIST& params, IfcPlane* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementarySurface*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCostSchedule>(const DB& db, const LIST& params, IfcCostSchedule* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRightCircularCone>(const DB& db, const LIST& params, IfcRightCircularCone* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCsgPrimitive3D*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElementAssembly>(const DB& db, const LIST& params, IfcElementAssembly* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBuildingElement>(const DB& db, const LIST& params, IfcBuildingElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+	if (params.GetSize() < 8) { throw STEP::TypeError("expected 8 arguments to IfcBuildingElement"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcMember>(const DB& db, const LIST& params, IfcMember* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBuildingElementProxy>(const DB& db, const LIST& params, IfcBuildingElementProxy* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralActivity>(const DB& db, const LIST& params, IfcStructuralActivity* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProduct*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralAction>(const DB& db, const LIST& params, IfcStructuralAction* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralActivity*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralPlanarAction>(const DB& db, const LIST& params, IfcStructuralPlanarAction* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralAction*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTopologicalRepresentationItem>(const DB& db, const LIST& params, IfcTopologicalRepresentationItem* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRepresentationItem*>(in));
+	if (params.GetSize() < 0) { throw STEP::TypeError("expected 0 arguments to IfcTopologicalRepresentationItem"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcConnectedFaceSet>(const DB& db, const LIST& params, IfcConnectedFaceSet* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTopologicalRepresentationItem*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcConnectedFaceSet"); }    do { // convert the 'CfsFaces' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcConnectedFaceSet,1>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->CfsFaces, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcConnectedFaceSet to be a `SET [1:?] OF IfcFace`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSweptSurface>(const DB& db, const LIST& params, IfcSweptSurface* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSurface*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSurfaceOfLinearExtrusion>(const DB& db, const LIST& params, IfcSurfaceOfLinearExtrusion* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSweptSurface*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcArbitraryProfileDefWithVoids>(const DB& db, const LIST& params, IfcArbitraryProfileDefWithVoids* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcArbitraryClosedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProcess>(const DB& db, const LIST& params, IfcProcess* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObject*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProcedure>(const DB& db, const LIST& params, IfcProcedure* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProcess*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcVector>(const DB& db, const LIST& params, IfcVector* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFaceBound>(const DB& db, const LIST& params, IfcFaceBound* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTopologicalRepresentationItem*>(in));
+	if (params.GetSize() < 2) { throw STEP::TypeError("expected 2 arguments to IfcFaceBound"); }    do { // convert the 'Bound' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcFaceBound,2>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->Bound, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcFaceBound to be a `IfcLoop`")); }
+    } while(0);
+    do { // convert the 'Orientation' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcFaceBound,2>::aux_is_derived[1]=true; break; }
+        try { GenericConvert( in->Orientation, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcFaceBound to be a `BOOLEAN`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFaceOuterBound>(const DB& db, const LIST& params, IfcFaceOuterBound* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFaceBound*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFeatureElementAddition>(const DB& db, const LIST& params, IfcFeatureElementAddition* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFeatureElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcNamedUnit>(const DB& db, const LIST& params, IfcNamedUnit* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 2) { throw STEP::TypeError("expected 2 arguments to IfcNamedUnit"); }    do { // convert the 'Dimensions' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcNamedUnit,2>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->Dimensions, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcNamedUnit to be a `IfcDimensionalExponents`")); }
+    } while(0);
+    do { // convert the 'UnitType' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcNamedUnit,2>::aux_is_derived[1]=true; break; }
+        try { GenericConvert( in->UnitType, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcNamedUnit to be a `IfcUnitEnum`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcHeatExchangerType>(const DB& db, const LIST& params, IfcHeatExchangerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPresentationStyleAssignment>(const DB& db, const LIST& params, IfcPresentationStyleAssignment* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcPresentationStyleAssignment"); }    do { // convert the 'Styles' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Styles, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcPresentationStyleAssignment to be a `SET [1:?] OF IfcPresentationStyleSelect`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowTreatmentDeviceType>(const DB& db, const LIST& params, IfcFlowTreatmentDeviceType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFilterType>(const DB& db, const LIST& params, IfcFilterType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTreatmentDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcResource>(const DB& db, const LIST& params, IfcResource* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObject*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEvaporativeCoolerType>(const DB& db, const LIST& params, IfcEvaporativeCoolerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcOffsetCurve2D>(const DB& db, const LIST& params, IfcOffsetCurve2D* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEdge>(const DB& db, const LIST& params, IfcEdge* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTopologicalRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSubedge>(const DB& db, const LIST& params, IfcSubedge* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEdge*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProxy>(const DB& db, const LIST& params, IfcProxy* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProduct*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLine>(const DB& db, const LIST& params, IfcLine* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcColumn>(const DB& db, const LIST& params, IfcColumn* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcObjectPlacement>(const DB& db, const LIST& params, IfcObjectPlacement* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 0) { throw STEP::TypeError("expected 0 arguments to IfcObjectPlacement"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcGridPlacement>(const DB& db, const LIST& params, IfcGridPlacement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObjectPlacement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDistributionControlElementType>(const DB& db, const LIST& params, IfcDistributionControlElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRelConnects>(const DB& db, const LIST& params, IfcRelConnects* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRelationship*>(in));
+	if (params.GetSize() < 4) { throw STEP::TypeError("expected 4 arguments to IfcRelConnects"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAnnotation>(const DB& db, const LIST& params, IfcAnnotation* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProduct*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPlate>(const DB& db, const LIST& params, IfcPlate* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSolidModel>(const DB& db, const LIST& params, IfcSolidModel* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+	if (params.GetSize() < 0) { throw STEP::TypeError("expected 0 arguments to IfcSolidModel"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcManifoldSolidBrep>(const DB& db, const LIST& params, IfcManifoldSolidBrep* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSolidModel*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcManifoldSolidBrep"); }    do { // convert the 'Outer' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcManifoldSolidBrep,1>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->Outer, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcManifoldSolidBrep to be a `IfcClosedShell`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowStorageDeviceType>(const DB& db, const LIST& params, IfcFlowStorageDeviceType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralItem>(const DB& db, const LIST& params, IfcStructuralItem* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProduct*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralMember>(const DB& db, const LIST& params, IfcStructuralMember* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralCurveMember>(const DB& db, const LIST& params, IfcStructuralCurveMember* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralMember*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralConnection>(const DB& db, const LIST& params, IfcStructuralConnection* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralSurfaceConnection>(const DB& db, const LIST& params, IfcStructuralSurfaceConnection* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralConnection*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCoilType>(const DB& db, const LIST& params, IfcCoilType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDuctFittingType>(const DB& db, const LIST& params, IfcDuctFittingType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowFittingType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStyledItem>(const DB& db, const LIST& params, IfcStyledItem* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRepresentationItem*>(in));
+	if (params.GetSize() < 3) { throw STEP::TypeError("expected 3 arguments to IfcStyledItem"); }    do { // convert the 'Item' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcStyledItem,3>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Item, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcStyledItem to be a `IfcRepresentationItem`")); }
+    } while(0);
+    do { // convert the 'Styles' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcStyledItem,3>::aux_is_derived[1]=true; break; }
+        try { GenericConvert( in->Styles, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcStyledItem to be a `SET [1:?] OF IfcPresentationStyleAssignment`")); }
+    } while(0);
+    do { // convert the 'Name' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcStyledItem,3>::aux_is_derived[2]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Name, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcStyledItem to be a `IfcLabel`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAnnotationOccurrence>(const DB& db, const LIST& params, IfcAnnotationOccurrence* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStyledItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAnnotationCurveOccurrence>(const DB& db, const LIST& params, IfcAnnotationCurveOccurrence* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcAnnotationOccurrence*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDimensionCurve>(const DB& db, const LIST& params, IfcDimensionCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcAnnotationCurveOccurrence*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBoundedCurve>(const DB& db, const LIST& params, IfcBoundedCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCurve*>(in));
+	if (params.GetSize() < 0) { throw STEP::TypeError("expected 0 arguments to IfcBoundedCurve"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAxis1Placement>(const DB& db, const LIST& params, IfcAxis1Placement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcPlacement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralPointAction>(const DB& db, const LIST& params, IfcStructuralPointAction* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralAction*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSpatialStructureElement>(const DB& db, const LIST& params, IfcSpatialStructureElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProduct*>(in));
+	if (params.GetSize() < 9) { throw STEP::TypeError("expected 9 arguments to IfcSpatialStructureElement"); }    do { // convert the 'LongName' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcSpatialStructureElement,2>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->LongName, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 7 to IfcSpatialStructureElement to be a `IfcLabel`")); }
+    } while(0);
+    do { // convert the 'CompositionType' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcSpatialStructureElement,2>::aux_is_derived[1]=true; break; }
+        try { GenericConvert( in->CompositionType, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 8 to IfcSpatialStructureElement to be a `IfcElementCompositionEnum`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSpace>(const DB& db, const LIST& params, IfcSpace* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSpatialStructureElement*>(in));
+	if (params.GetSize() < 11) { throw STEP::TypeError("expected 11 arguments to IfcSpace"); }    do { // convert the 'InteriorOrExteriorSpace' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->InteriorOrExteriorSpace, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 9 to IfcSpace to be a `IfcInternalOrExternalEnum`")); }
+    } while(0);
+    do { // convert the 'ElevationWithFlooring' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->ElevationWithFlooring, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 10 to IfcSpace to be a `IfcLengthMeasure`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCoolingTowerType>(const DB& db, const LIST& params, IfcCoolingTowerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFacetedBrepWithVoids>(const DB& db, const LIST& params, IfcFacetedBrepWithVoids* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcManifoldSolidBrep*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcValveType>(const DB& db, const LIST& params, IfcValveType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowControllerType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSystemFurnitureElementType>(const DB& db, const LIST& params, IfcSystemFurnitureElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFurnishingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDiscreteAccessory>(const DB& db, const LIST& params, IfcDiscreteAccessory* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementComponent*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBuildingElementType>(const DB& db, const LIST& params, IfcBuildingElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRailingType>(const DB& db, const LIST& params, IfcRailingType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcGasTerminalType>(const DB& db, const LIST& params, IfcGasTerminalType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSpaceProgram>(const DB& db, const LIST& params, IfcSpaceProgram* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCovering>(const DB& db, const LIST& params, IfcCovering* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPresentationStyle>(const DB& db, const LIST& params, IfcPresentationStyle* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcPresentationStyle"); }    do { // convert the 'Name' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcPresentationStyle,1>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Name, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcPresentationStyle to be a `IfcLabel`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElectricHeaterType>(const DB& db, const LIST& params, IfcElectricHeaterType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBuildingStorey>(const DB& db, const LIST& params, IfcBuildingStorey* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSpatialStructureElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcVertex>(const DB& db, const LIST& params, IfcVertex* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTopologicalRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcVertexPoint>(const DB& db, const LIST& params, IfcVertexPoint* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcVertex*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowInstrumentType>(const DB& db, const LIST& params, IfcFlowInstrumentType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionControlElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcParameterizedProfileDef>(const DB& db, const LIST& params, IfcParameterizedProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProfileDef*>(in));
+	if (params.GetSize() < 3) { throw STEP::TypeError("expected 3 arguments to IfcParameterizedProfileDef"); }    do { // convert the 'Position' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcParameterizedProfileDef,1>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->Position, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcParameterizedProfileDef to be a `IfcAxis2Placement2D`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcUShapeProfileDef>(const DB& db, const LIST& params, IfcUShapeProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRamp>(const DB& db, const LIST& params, IfcRamp* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCompositeCurve>(const DB& db, const LIST& params, IfcCompositeCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBoundedCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralCurveMemberVarying>(const DB& db, const LIST& params, IfcStructuralCurveMemberVarying* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralCurveMember*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRampFlightType>(const DB& db, const LIST& params, IfcRampFlightType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDraughtingCallout>(const DB& db, const LIST& params, IfcDraughtingCallout* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDimensionCurveDirectedCallout>(const DB& db, const LIST& params, IfcDimensionCurveDirectedCallout* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDraughtingCallout*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRadiusDimension>(const DB& db, const LIST& params, IfcRadiusDimension* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDimensionCurveDirectedCallout*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEdgeFeature>(const DB& db, const LIST& params, IfcEdgeFeature* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFeatureElementSubtraction*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSweptAreaSolid>(const DB& db, const LIST& params, IfcSweptAreaSolid* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSolidModel*>(in));
+	if (params.GetSize() < 2) { throw STEP::TypeError("expected 2 arguments to IfcSweptAreaSolid"); }    do { // convert the 'SweptArea' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcSweptAreaSolid,2>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->SweptArea, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcSweptAreaSolid to be a `IfcProfileDef`")); }
+    } while(0);
+    do { // convert the 'Position' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcSweptAreaSolid,2>::aux_is_derived[1]=true; break; }
+        try { GenericConvert( in->Position, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcSweptAreaSolid to be a `IfcAxis2Placement3D`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcExtrudedAreaSolid>(const DB& db, const LIST& params, IfcExtrudedAreaSolid* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSweptAreaSolid*>(in));
+	if (params.GetSize() < 4) { throw STEP::TypeError("expected 4 arguments to IfcExtrudedAreaSolid"); }    do { // convert the 'ExtrudedDirection' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->ExtrudedDirection, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcExtrudedAreaSolid to be a `IfcDirection`")); }
+    } while(0);
+    do { // convert the 'Depth' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Depth, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 3 to IfcExtrudedAreaSolid to be a `IfcPositiveLengthMeasure`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAnnotationTextOccurrence>(const DB& db, const LIST& params, IfcAnnotationTextOccurrence* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcAnnotationOccurrence*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStair>(const DB& db, const LIST& params, IfcStair* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFillAreaStyleTileSymbolWithStyle>(const DB& db, const LIST& params, IfcFillAreaStyleTileSymbolWithStyle* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAnnotationSymbolOccurrence>(const DB& db, const LIST& params, IfcAnnotationSymbolOccurrence* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcAnnotationOccurrence*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTerminatorSymbol>(const DB& db, const LIST& params, IfcTerminatorSymbol* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcAnnotationSymbolOccurrence*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDimensionCurveTerminator>(const DB& db, const LIST& params, IfcDimensionCurveTerminator* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTerminatorSymbol*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRectangleProfileDef>(const DB& db, const LIST& params, IfcRectangleProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+	if (params.GetSize() < 5) { throw STEP::TypeError("expected 5 arguments to IfcRectangleProfileDef"); }    do { // convert the 'XDim' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRectangleProfileDef,2>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->XDim, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 3 to IfcRectangleProfileDef to be a `IfcPositiveLengthMeasure`")); }
+    } while(0);
+    do { // convert the 'YDim' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRectangleProfileDef,2>::aux_is_derived[1]=true; break; }
+        try { GenericConvert( in->YDim, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 4 to IfcRectangleProfileDef to be a `IfcPositiveLengthMeasure`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRectangleHollowProfileDef>(const DB& db, const LIST& params, IfcRectangleHollowProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRectangleProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLocalPlacement>(const DB& db, const LIST& params, IfcLocalPlacement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObjectPlacement*>(in));
+	if (params.GetSize() < 2) { throw STEP::TypeError("expected 2 arguments to IfcLocalPlacement"); }    do { // convert the 'PlacementRelTo' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->PlacementRelTo, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcLocalPlacement to be a `IfcObjectPlacement`")); }
+    } while(0);
+    do { // convert the 'RelativePlacement' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->RelativePlacement, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcLocalPlacement to be a `IfcAxis2Placement`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTask>(const DB& db, const LIST& params, IfcTask* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProcess*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAnnotationFillAreaOccurrence>(const DB& db, const LIST& params, IfcAnnotationFillAreaOccurrence* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcAnnotationOccurrence*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFace>(const DB& db, const LIST& params, IfcFace* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTopologicalRepresentationItem*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcFace"); }    do { // convert the 'Bounds' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcFace,1>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->Bounds, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcFace to be a `SET [1:?] OF IfcFaceBound`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowSegmentType>(const DB& db, const LIST& params, IfcFlowSegmentType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDuctSegmentType>(const DB& db, const LIST& params, IfcDuctSegmentType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowSegmentType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcConstructionResource>(const DB& db, const LIST& params, IfcConstructionResource* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcResource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcConstructionEquipmentResource>(const DB& db, const LIST& params, IfcConstructionEquipmentResource* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConstructionResource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSanitaryTerminalType>(const DB& db, const LIST& params, IfcSanitaryTerminalType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCircleProfileDef>(const DB& db, const LIST& params, IfcCircleProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralReaction>(const DB& db, const LIST& params, IfcStructuralReaction* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralActivity*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralPointReaction>(const DB& db, const LIST& params, IfcStructuralPointReaction* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralReaction*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRailing>(const DB& db, const LIST& params, IfcRailing* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTextLiteral>(const DB& db, const LIST& params, IfcTextLiteral* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCartesianTransformationOperator>(const DB& db, const LIST& params, IfcCartesianTransformationOperator* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+	if (params.GetSize() < 4) { throw STEP::TypeError("expected 4 arguments to IfcCartesianTransformationOperator"); }    do { // convert the 'Axis1' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcCartesianTransformationOperator,4>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Axis1, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcCartesianTransformationOperator to be a `IfcDirection`")); }
+    } while(0);
+    do { // convert the 'Axis2' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcCartesianTransformationOperator,4>::aux_is_derived[1]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Axis2, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcCartesianTransformationOperator to be a `IfcDirection`")); }
+    } while(0);
+    do { // convert the 'LocalOrigin' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcCartesianTransformationOperator,4>::aux_is_derived[2]=true; break; }
+        try { GenericConvert( in->LocalOrigin, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcCartesianTransformationOperator to be a `IfcCartesianPoint`")); }
+    } while(0);
+    do { // convert the 'Scale' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcCartesianTransformationOperator,4>::aux_is_derived[3]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Scale, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 3 to IfcCartesianTransformationOperator to be a `REAL`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLinearDimension>(const DB& db, const LIST& params, IfcLinearDimension* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDimensionCurveDirectedCallout*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDamperType>(const DB& db, const LIST& params, IfcDamperType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowControllerType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSIUnit>(const DB& db, const LIST& params, IfcSIUnit* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcNamedUnit*>(in));
+	if (params.GetSize() < 4) { throw STEP::TypeError("expected 4 arguments to IfcSIUnit"); }    do { // convert the 'Prefix' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Prefix, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcSIUnit to be a `IfcSIPrefix`")); }
+    } while(0);
+    do { // convert the 'Name' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Name, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 3 to IfcSIUnit to be a `IfcSIUnitName`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDistributionElement>(const DB& db, const LIST& params, IfcDistributionElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDistributionControlElement>(const DB& db, const LIST& params, IfcDistributionControlElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTransformerType>(const DB& db, const LIST& params, IfcTransformerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLaborResource>(const DB& db, const LIST& params, IfcLaborResource* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConstructionResource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFurnitureStandard>(const DB& db, const LIST& params, IfcFurnitureStandard* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStairFlightType>(const DB& db, const LIST& params, IfcStairFlightType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcWorkControl>(const DB& db, const LIST& params, IfcWorkControl* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcWorkPlan>(const DB& db, const LIST& params, IfcWorkPlan* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcWorkControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCondition>(const DB& db, const LIST& params, IfcCondition* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGroup*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcWindow>(const DB& db, const LIST& params, IfcWindow* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProtectiveDeviceType>(const DB& db, const LIST& params, IfcProtectiveDeviceType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowControllerType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcJunctionBoxType>(const DB& db, const LIST& params, IfcJunctionBoxType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowFittingType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralAnalysisModel>(const DB& db, const LIST& params, IfcStructuralAnalysisModel* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSystem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAxis2Placement2D>(const DB& db, const LIST& params, IfcAxis2Placement2D* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcPlacement*>(in));
+	if (params.GetSize() < 2) { throw STEP::TypeError("expected 2 arguments to IfcAxis2Placement2D"); }    do { // convert the 'RefDirection' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->RefDirection, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcAxis2Placement2D to be a `IfcDirection`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSpaceType>(const DB& db, const LIST& params, IfcSpaceType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSpatialStructureElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEllipseProfileDef>(const DB& db, const LIST& params, IfcEllipseProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDistributionFlowElement>(const DB& db, const LIST& params, IfcDistributionFlowElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowMovingDevice>(const DB& db, const LIST& params, IfcFlowMovingDevice* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSurfaceStyleWithTextures>(const DB& db, const LIST& params, IfcSurfaceStyleWithTextures* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcSurfaceStyleWithTextures"); }    do { // convert the 'Textures' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Textures, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcSurfaceStyleWithTextures to be a `LIST [1:?] OF IfcSurfaceTexture`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcGeometricSet>(const DB& db, const LIST& params, IfcGeometricSet* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProjectOrder>(const DB& db, const LIST& params, IfcProjectOrder* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBSplineCurve>(const DB& db, const LIST& params, IfcBSplineCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBoundedCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBezierCurve>(const DB& db, const LIST& params, IfcBezierCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBSplineCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralPointConnection>(const DB& db, const LIST& params, IfcStructuralPointConnection* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralConnection*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowController>(const DB& db, const LIST& params, IfcFlowController* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElectricDistributionPoint>(const DB& db, const LIST& params, IfcElectricDistributionPoint* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowController*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSite>(const DB& db, const LIST& params, IfcSite* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSpatialStructureElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcOffsetCurve3D>(const DB& db, const LIST& params, IfcOffsetCurve3D* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcVirtualElement>(const DB& db, const LIST& params, IfcVirtualElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcConstructionProductResource>(const DB& db, const LIST& params, IfcConstructionProductResource* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConstructionResource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSurfaceCurveSweptAreaSolid>(const DB& db, const LIST& params, IfcSurfaceCurveSweptAreaSolid* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSweptAreaSolid*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCartesianTransformationOperator3D>(const DB& db, const LIST& params, IfcCartesianTransformationOperator3D* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCartesianTransformationOperator*>(in));
+	if (params.GetSize() < 5) { throw STEP::TypeError("expected 5 arguments to IfcCartesianTransformationOperator3D"); }    do { // convert the 'Axis3' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcCartesianTransformationOperator3D,1>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Axis3, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 4 to IfcCartesianTransformationOperator3D to be a `IfcDirection`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCartesianTransformationOperator3DnonUniform>(const DB& db, const LIST& params, IfcCartesianTransformationOperator3DnonUniform* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCartesianTransformationOperator3D*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCrewResource>(const DB& db, const LIST& params, IfcCrewResource* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConstructionResource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralSurfaceMember>(const DB& db, const LIST& params, IfcStructuralSurfaceMember* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralMember*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<Ifc2DCompositeCurve>(const DB& db, const LIST& params, Ifc2DCompositeCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCompositeCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRepresentationContext>(const DB& db, const LIST& params, IfcRepresentationContext* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 2) { throw STEP::TypeError("expected 2 arguments to IfcRepresentationContext"); }    do { // convert the 'ContextIdentifier' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRepresentationContext,2>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->ContextIdentifier, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcRepresentationContext to be a `IfcLabel`")); }
+    } while(0);
+    do { // convert the 'ContextType' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRepresentationContext,2>::aux_is_derived[1]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->ContextType, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcRepresentationContext to be a `IfcLabel`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcGeometricRepresentationContext>(const DB& db, const LIST& params, IfcGeometricRepresentationContext* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRepresentationContext*>(in));
+	if (params.GetSize() < 6) { throw STEP::TypeError("expected 6 arguments to IfcGeometricRepresentationContext"); }    do { // convert the 'CoordinateSpaceDimension' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcGeometricRepresentationContext,4>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->CoordinateSpaceDimension, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcGeometricRepresentationContext to be a `IfcDimensionCount`")); }
+    } while(0);
+    do { // convert the 'Precision' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcGeometricRepresentationContext,4>::aux_is_derived[1]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Precision, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 3 to IfcGeometricRepresentationContext to be a `REAL`")); }
+    } while(0);
+    do { // convert the 'WorldCoordinateSystem' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcGeometricRepresentationContext,4>::aux_is_derived[2]=true; break; }
+        try { GenericConvert( in->WorldCoordinateSystem, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 4 to IfcGeometricRepresentationContext to be a `IfcAxis2Placement`")); }
+    } while(0);
+    do { // convert the 'TrueNorth' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcGeometricRepresentationContext,4>::aux_is_derived[3]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->TrueNorth, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 5 to IfcGeometricRepresentationContext to be a `IfcDirection`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowTreatmentDevice>(const DB& db, const LIST& params, IfcFlowTreatmentDevice* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRightCircularCylinder>(const DB& db, const LIST& params, IfcRightCircularCylinder* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCsgPrimitive3D*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcWasteTerminalType>(const DB& db, const LIST& params, IfcWasteTerminalType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBuildingElementComponent>(const DB& db, const LIST& params, IfcBuildingElementComponent* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBuildingElementPart>(const DB& db, const LIST& params, IfcBuildingElementPart* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementComponent*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcWall>(const DB& db, const LIST& params, IfcWall* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcWallStandardCase>(const DB& db, const LIST& params, IfcWallStandardCase* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcWall*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPath>(const DB& db, const LIST& params, IfcPath* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTopologicalRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDefinedSymbol>(const DB& db, const LIST& params, IfcDefinedSymbol* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralSurfaceMemberVarying>(const DB& db, const LIST& params, IfcStructuralSurfaceMemberVarying* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralSurfaceMember*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPoint>(const DB& db, const LIST& params, IfcPoint* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+	if (params.GetSize() < 0) { throw STEP::TypeError("expected 0 arguments to IfcPoint"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSurfaceOfRevolution>(const DB& db, const LIST& params, IfcSurfaceOfRevolution* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSweptSurface*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowTerminal>(const DB& db, const LIST& params, IfcFlowTerminal* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFurnishingElement>(const DB& db, const LIST& params, IfcFurnishingElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSurfaceStyleShading>(const DB& db, const LIST& params, IfcSurfaceStyleShading* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcSurfaceStyleShading"); }    do { // convert the 'SurfaceColour' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcSurfaceStyleShading,1>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->SurfaceColour, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcSurfaceStyleShading to be a `IfcColourRgb`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSurfaceStyleRendering>(const DB& db, const LIST& params, IfcSurfaceStyleRendering* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSurfaceStyleShading*>(in));
+	if (params.GetSize() < 9) { throw STEP::TypeError("expected 9 arguments to IfcSurfaceStyleRendering"); }    do { // convert the 'Transparency' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Transparency, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcSurfaceStyleRendering to be a `IfcNormalisedRatioMeasure`")); }
+    } while(0);
+    do { // convert the 'DiffuseColour' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->DiffuseColour, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcSurfaceStyleRendering to be a `IfcColourOrFactor`")); }
+    } while(0);
+    do { // convert the 'TransmissionColour' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->TransmissionColour, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 3 to IfcSurfaceStyleRendering to be a `IfcColourOrFactor`")); }
+    } while(0);
+    do { // convert the 'DiffuseTransmissionColour' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->DiffuseTransmissionColour, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 4 to IfcSurfaceStyleRendering to be a `IfcColourOrFactor`")); }
+    } while(0);
+    do { // convert the 'ReflectionColour' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->ReflectionColour, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 5 to IfcSurfaceStyleRendering to be a `IfcColourOrFactor`")); }
+    } while(0);
+    do { // convert the 'SpecularColour' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->SpecularColour, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 6 to IfcSurfaceStyleRendering to be a `IfcColourOrFactor`")); }
+    } while(0);
+    do { // convert the 'SpecularHighlight' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->SpecularHighlight, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 7 to IfcSurfaceStyleRendering to be a `IfcSpecularHighlightSelect`")); }
+    } while(0);
+    do { // convert the 'ReflectanceMethod' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->ReflectanceMethod, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 8 to IfcSurfaceStyleRendering to be a `IfcReflectanceMethodEnum`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCircleHollowProfileDef>(const DB& db, const LIST& params, IfcCircleHollowProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCircleProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowMovingDeviceType>(const DB& db, const LIST& params, IfcFlowMovingDeviceType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFanType>(const DB& db, const LIST& params, IfcFanType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowMovingDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralPlanarActionVarying>(const DB& db, const LIST& params, IfcStructuralPlanarActionVarying* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralPlanarAction*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProductRepresentation>(const DB& db, const LIST& params, IfcProductRepresentation* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 3) { throw STEP::TypeError("expected 3 arguments to IfcProductRepresentation"); }    do { // convert the 'Name' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcProductRepresentation,3>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Name, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcProductRepresentation to be a `IfcLabel`")); }
+    } while(0);
+    do { // convert the 'Description' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcProductRepresentation,3>::aux_is_derived[1]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Description, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcProductRepresentation to be a `IfcText`")); }
+    } while(0);
+    do { // convert the 'Representations' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcProductRepresentation,3>::aux_is_derived[2]=true; break; }
+        try { GenericConvert( in->Representations, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcProductRepresentation to be a `LIST [1:?] OF IfcRepresentation`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStackTerminalType>(const DB& db, const LIST& params, IfcStackTerminalType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcReinforcingElement>(const DB& db, const LIST& params, IfcReinforcingElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementComponent*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcReinforcingMesh>(const DB& db, const LIST& params, IfcReinforcingMesh* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcReinforcingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcOrderAction>(const DB& db, const LIST& params, IfcOrderAction* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTask*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLightSource>(const DB& db, const LIST& params, IfcLightSource* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLightSourceDirectional>(const DB& db, const LIST& params, IfcLightSourceDirectional* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcLightSource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLoop>(const DB& db, const LIST& params, IfcLoop* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTopologicalRepresentationItem*>(in));
+	if (params.GetSize() < 0) { throw STEP::TypeError("expected 0 arguments to IfcLoop"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcVertexLoop>(const DB& db, const LIST& params, IfcVertexLoop* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcLoop*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcChamferEdgeFeature>(const DB& db, const LIST& params, IfcChamferEdgeFeature* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEdgeFeature*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElementComponentType>(const DB& db, const LIST& params, IfcElementComponentType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFastenerType>(const DB& db, const LIST& params, IfcFastenerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementComponentType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcMechanicalFastenerType>(const DB& db, const LIST& params, IfcMechanicalFastenerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFastenerType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcScheduleTimeControl>(const DB& db, const LIST& params, IfcScheduleTimeControl* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSurfaceStyle>(const DB& db, const LIST& params, IfcSurfaceStyle* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcPresentationStyle*>(in));
+	if (params.GetSize() < 3) { throw STEP::TypeError("expected 3 arguments to IfcSurfaceStyle"); }    do { // convert the 'Side' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Side, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcSurfaceStyle to be a `IfcSurfaceSide`")); }
+    } while(0);
+    do { // convert the 'Styles' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Styles, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcSurfaceStyle to be a `SET [1:5] OF IfcSurfaceStyleElementSelect`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcOpenShell>(const DB& db, const LIST& params, IfcOpenShell* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConnectedFaceSet*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSubContractResource>(const DB& db, const LIST& params, IfcSubContractResource* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConstructionResource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSweptDiskSolid>(const DB& db, const LIST& params, IfcSweptDiskSolid* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSolidModel*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTankType>(const DB& db, const LIST& params, IfcTankType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowStorageDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSphere>(const DB& db, const LIST& params, IfcSphere* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCsgPrimitive3D*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPolyLoop>(const DB& db, const LIST& params, IfcPolyLoop* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcLoop*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcPolyLoop"); }    do { // convert the 'Polygon' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Polygon, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcPolyLoop to be a `LIST [3:?] OF IfcCartesianPoint`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCableCarrierFittingType>(const DB& db, const LIST& params, IfcCableCarrierFittingType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowFittingType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcHumidifierType>(const DB& db, const LIST& params, IfcHumidifierType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPerformanceHistory>(const DB& db, const LIST& params, IfcPerformanceHistory* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcShapeModel>(const DB& db, const LIST& params, IfcShapeModel* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRepresentation*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTopologyRepresentation>(const DB& db, const LIST& params, IfcTopologyRepresentation* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcShapeModel*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBuilding>(const DB& db, const LIST& params, IfcBuilding* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSpatialStructureElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRoundedRectangleProfileDef>(const DB& db, const LIST& params, IfcRoundedRectangleProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRectangleProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStairFlight>(const DB& db, const LIST& params, IfcStairFlight* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDistributionChamberElement>(const DB& db, const LIST& params, IfcDistributionChamberElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcShapeRepresentation>(const DB& db, const LIST& params, IfcShapeRepresentation* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcShapeModel*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRampFlight>(const DB& db, const LIST& params, IfcRampFlight* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBeamType>(const DB& db, const LIST& params, IfcBeamType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRelDecomposes>(const DB& db, const LIST& params, IfcRelDecomposes* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRelationship*>(in));
+	if (params.GetSize() < 6) { throw STEP::TypeError("expected 6 arguments to IfcRelDecomposes"); }    do { // convert the 'RelatingObject' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRelDecomposes,2>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->RelatingObject, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 4 to IfcRelDecomposes to be a `IfcObjectDefinition`")); }
+    } while(0);
+    do { // convert the 'RelatedObjects' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcRelDecomposes,2>::aux_is_derived[1]=true; break; }
+        try { GenericConvert( in->RelatedObjects, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 5 to IfcRelDecomposes to be a `SET [1:?] OF IfcObjectDefinition`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRoof>(const DB& db, const LIST& params, IfcRoof* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFooting>(const DB& db, const LIST& params, IfcFooting* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLightSourceAmbient>(const DB& db, const LIST& params, IfcLightSourceAmbient* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcLightSource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcWindowStyle>(const DB& db, const LIST& params, IfcWindowStyle* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTypeProduct*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBuildingElementProxyType>(const DB& db, const LIST& params, IfcBuildingElementProxyType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAxis2Placement3D>(const DB& db, const LIST& params, IfcAxis2Placement3D* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcPlacement*>(in));
+	if (params.GetSize() < 3) { throw STEP::TypeError("expected 3 arguments to IfcAxis2Placement3D"); }    do { // convert the 'Axis' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Axis, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcAxis2Placement3D to be a `IfcDirection`")); }
+    } while(0);
+    do { // convert the 'RefDirection' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->RefDirection, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcAxis2Placement3D to be a `IfcDirection`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEdgeCurve>(const DB& db, const LIST& params, IfcEdgeCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEdge*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcClosedShell>(const DB& db, const LIST& params, IfcClosedShell* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConnectedFaceSet*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcClosedShell"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTendonAnchor>(const DB& db, const LIST& params, IfcTendonAnchor* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcReinforcingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCondenserType>(const DB& db, const LIST& params, IfcCondenserType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPipeSegmentType>(const DB& db, const LIST& params, IfcPipeSegmentType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowSegmentType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPointOnSurface>(const DB& db, const LIST& params, IfcPointOnSurface* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcPoint*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAsset>(const DB& db, const LIST& params, IfcAsset* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGroup*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLightSourcePositional>(const DB& db, const LIST& params, IfcLightSourcePositional* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcLightSource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProjectionCurve>(const DB& db, const LIST& params, IfcProjectionCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcAnnotationCurveOccurrence*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFillAreaStyleTiles>(const DB& db, const LIST& params, IfcFillAreaStyleTiles* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElectricMotorType>(const DB& db, const LIST& params, IfcElectricMotorType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTendon>(const DB& db, const LIST& params, IfcTendon* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcReinforcingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDistributionChamberElementType>(const DB& db, const LIST& params, IfcDistributionChamberElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcMemberType>(const DB& db, const LIST& params, IfcMemberType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralLinearAction>(const DB& db, const LIST& params, IfcStructuralLinearAction* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralAction*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralLinearActionVarying>(const DB& db, const LIST& params, IfcStructuralLinearActionVarying* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralLinearAction*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProductDefinitionShape>(const DB& db, const LIST& params, IfcProductDefinitionShape* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProductRepresentation*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFastener>(const DB& db, const LIST& params, IfcFastener* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementComponent*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcMechanicalFastener>(const DB& db, const LIST& params, IfcMechanicalFastener* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFastener*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEvaporatorType>(const DB& db, const LIST& params, IfcEvaporatorType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDiscreteAccessoryType>(const DB& db, const LIST& params, IfcDiscreteAccessoryType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementComponentType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralCurveConnection>(const DB& db, const LIST& params, IfcStructuralCurveConnection* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcStructuralConnection*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProjectionElement>(const DB& db, const LIST& params, IfcProjectionElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFeatureElementAddition*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCoveringType>(const DB& db, const LIST& params, IfcCoveringType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPumpType>(const DB& db, const LIST& params, IfcPumpType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowMovingDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPile>(const DB& db, const LIST& params, IfcPile* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcUnitAssignment>(const DB& db, const LIST& params, IfcUnitAssignment* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcUnitAssignment"); }    do { // convert the 'Units' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Units, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcUnitAssignment to be a `SET [1:?] OF IfcUnit`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBoundingBox>(const DB& db, const LIST& params, IfcBoundingBox* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcShellBasedSurfaceModel>(const DB& db, const LIST& params, IfcShellBasedSurfaceModel* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcShellBasedSurfaceModel"); }    do { // convert the 'SbsmBoundary' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->SbsmBoundary, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcShellBasedSurfaceModel to be a `SET [1:?] OF IfcShell`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFacetedBrep>(const DB& db, const LIST& params, IfcFacetedBrep* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcManifoldSolidBrep*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTextLiteralWithExtent>(const DB& db, const LIST& params, IfcTextLiteralWithExtent* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTextLiteral*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElectricApplianceType>(const DB& db, const LIST& params, IfcElectricApplianceType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTrapeziumProfileDef>(const DB& db, const LIST& params, IfcTrapeziumProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRelContainedInSpatialStructure>(const DB& db, const LIST& params, IfcRelContainedInSpatialStructure* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRelConnects*>(in));
+	if (params.GetSize() < 6) { throw STEP::TypeError("expected 6 arguments to IfcRelContainedInSpatialStructure"); }    do { // convert the 'RelatedElements' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->RelatedElements, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 4 to IfcRelContainedInSpatialStructure to be a `SET [1:?] OF IfcProduct`")); }
+    } while(0);
+    do { // convert the 'RelatingStructure' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->RelatingStructure, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 5 to IfcRelContainedInSpatialStructure to be a `IfcSpatialStructureElement`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEdgeLoop>(const DB& db, const LIST& params, IfcEdgeLoop* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcLoop*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProject>(const DB& db, const LIST& params, IfcProject* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObject*>(in));
+	if (params.GetSize() < 9) { throw STEP::TypeError("expected 9 arguments to IfcProject"); }    do { // convert the 'LongName' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->LongName, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 5 to IfcProject to be a `IfcLabel`")); }
+    } while(0);
+    do { // convert the 'Phase' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Phase, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 6 to IfcProject to be a `IfcLabel`")); }
+    } while(0);
+    do { // convert the 'RepresentationContexts' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->RepresentationContexts, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 7 to IfcProject to be a `SET [1:?] OF IfcRepresentationContext`")); }
+    } while(0);
+    do { // convert the 'UnitsInContext' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->UnitsInContext, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 8 to IfcProject to be a `IfcUnitAssignment`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCartesianPoint>(const DB& db, const LIST& params, IfcCartesianPoint* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcPoint*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcCartesianPoint"); }    do { // convert the 'Coordinates' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Coordinates, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcCartesianPoint to be a `LIST [1:3] OF IfcLengthMeasure`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCurveBoundedPlane>(const DB& db, const LIST& params, IfcCurveBoundedPlane* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBoundedSurface*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcWallType>(const DB& db, const LIST& params, IfcWallType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFillAreaStyleHatching>(const DB& db, const LIST& params, IfcFillAreaStyleHatching* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEquipmentStandard>(const DB& db, const LIST& params, IfcEquipmentStandard* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDiameterDimension>(const DB& db, const LIST& params, IfcDiameterDimension* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDimensionCurveDirectedCallout*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralLoadGroup>(const DB& db, const LIST& params, IfcStructuralLoadGroup* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGroup*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcConstructionMaterialResource>(const DB& db, const LIST& params, IfcConstructionMaterialResource* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConstructionResource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRelAggregates>(const DB& db, const LIST& params, IfcRelAggregates* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRelDecomposes*>(in));
+	if (params.GetSize() < 6) { throw STEP::TypeError("expected 6 arguments to IfcRelAggregates"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBoilerType>(const DB& db, const LIST& params, IfcBoilerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcColourSpecification>(const DB& db, const LIST& params, IfcColourSpecification* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcColourSpecification"); }    do { // convert the 'Name' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcColourSpecification,1>::aux_is_derived[0]=true; break; }
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->Name, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcColourSpecification to be a `IfcLabel`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcColourRgb>(const DB& db, const LIST& params, IfcColourRgb* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcColourSpecification*>(in));
+	if (params.GetSize() < 4) { throw STEP::TypeError("expected 4 arguments to IfcColourRgb"); }    do { // convert the 'Red' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Red, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcColourRgb to be a `IfcNormalisedRatioMeasure`")); }
+    } while(0);
+    do { // convert the 'Green' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Green, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcColourRgb to be a `IfcNormalisedRatioMeasure`")); }
+    } while(0);
+    do { // convert the 'Blue' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Blue, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 3 to IfcColourRgb to be a `IfcNormalisedRatioMeasure`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDoorStyle>(const DB& db, const LIST& params, IfcDoorStyle* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTypeProduct*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDuctSilencerType>(const DB& db, const LIST& params, IfcDuctSilencerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTreatmentDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLightSourceGoniometric>(const DB& db, const LIST& params, IfcLightSourceGoniometric* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcLightSource*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcActuatorType>(const DB& db, const LIST& params, IfcActuatorType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionControlElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSensorType>(const DB& db, const LIST& params, IfcSensorType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionControlElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAirTerminalBoxType>(const DB& db, const LIST& params, IfcAirTerminalBoxType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowControllerType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAnnotationSurfaceOccurrence>(const DB& db, const LIST& params, IfcAnnotationSurfaceOccurrence* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcAnnotationOccurrence*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcZShapeProfileDef>(const DB& db, const LIST& params, IfcZShapeProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRationalBezierCurve>(const DB& db, const LIST& params, IfcRationalBezierCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBezierCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCartesianTransformationOperator2D>(const DB& db, const LIST& params, IfcCartesianTransformationOperator2D* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCartesianTransformationOperator*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCartesianTransformationOperator2DnonUniform>(const DB& db, const LIST& params, IfcCartesianTransformationOperator2DnonUniform* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCartesianTransformationOperator2D*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcMove>(const DB& db, const LIST& params, IfcMove* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcTask*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCableCarrierSegmentType>(const DB& db, const LIST& params, IfcCableCarrierSegmentType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowSegmentType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElectricalElement>(const DB& db, const LIST& params, IfcElectricalElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcChillerType>(const DB& db, const LIST& params, IfcChillerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcReinforcingBar>(const DB& db, const LIST& params, IfcReinforcingBar* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcReinforcingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCShapeProfileDef>(const DB& db, const LIST& params, IfcCShapeProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPermit>(const DB& db, const LIST& params, IfcPermit* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSlabType>(const DB& db, const LIST& params, IfcSlabType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLampType>(const DB& db, const LIST& params, IfcLampType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPlanarExtent>(const DB& db, const LIST& params, IfcPlanarExtent* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAlarmType>(const DB& db, const LIST& params, IfcAlarmType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionControlElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElectricFlowStorageDeviceType>(const DB& db, const LIST& params, IfcElectricFlowStorageDeviceType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowStorageDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEquipmentElement>(const DB& db, const LIST& params, IfcEquipmentElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLightFixtureType>(const DB& db, const LIST& params, IfcLightFixtureType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCurtainWall>(const DB& db, const LIST& params, IfcCurtainWall* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSlab>(const DB& db, const LIST& params, IfcSlab* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCurtainWallType>(const DB& db, const LIST& params, IfcCurtainWallType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcOutletType>(const DB& db, const LIST& params, IfcOutletType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCompressorType>(const DB& db, const LIST& params, IfcCompressorType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowMovingDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCraneRailAShapeProfileDef>(const DB& db, const LIST& params, IfcCraneRailAShapeProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowSegment>(const DB& db, const LIST& params, IfcFlowSegment* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSectionedSpine>(const DB& db, const LIST& params, IfcSectionedSpine* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElectricTimeControlType>(const DB& db, const LIST& params, IfcElectricTimeControlType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowControllerType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFaceSurface>(const DB& db, const LIST& params, IfcFaceSurface* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFace*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcMotorConnectionType>(const DB& db, const LIST& params, IfcMotorConnectionType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowFitting>(const DB& db, const LIST& params, IfcFlowFitting* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPointOnCurve>(const DB& db, const LIST& params, IfcPointOnCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcPoint*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTransportElementType>(const DB& db, const LIST& params, IfcTransportElementType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCableSegmentType>(const DB& db, const LIST& params, IfcCableSegmentType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowSegmentType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAnnotationSurface>(const DB& db, const LIST& params, IfcAnnotationSurface* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCompositeCurveSegment>(const DB& db, const LIST& params, IfcCompositeCurveSegment* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcServiceLife>(const DB& db, const LIST& params, IfcServiceLife* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPlateType>(const DB& db, const LIST& params, IfcPlateType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcVibrationIsolatorType>(const DB& db, const LIST& params, IfcVibrationIsolatorType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDiscreteAccessoryType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTrimmedCurve>(const DB& db, const LIST& params, IfcTrimmedCurve* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBoundedCurve*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcMappedItem>(const DB& db, const LIST& params, IfcMappedItem* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcRepresentationItem*>(in));
+	if (params.GetSize() < 2) { throw STEP::TypeError("expected 2 arguments to IfcMappedItem"); }    do { // convert the 'MappingSource' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->MappingSource, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcMappedItem to be a `IfcRepresentationMap`")); }
+    } while(0);
+    do { // convert the 'MappingTarget' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->MappingTarget, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcMappedItem to be a `IfcCartesianTransformationOperator`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDirection>(const DB& db, const LIST& params, IfcDirection* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcDirection"); }    do { // convert the 'DirectionRatios' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->DirectionRatios, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcDirection to be a `LIST [2:3] OF REAL`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBlock>(const DB& db, const LIST& params, IfcBlock* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcCsgPrimitive3D*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcProjectOrderRecord>(const DB& db, const LIST& params, IfcProjectOrderRecord* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowMeterType>(const DB& db, const LIST& params, IfcFlowMeterType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowControllerType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcControllerType>(const DB& db, const LIST& params, IfcControllerType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionControlElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBeam>(const DB& db, const LIST& params, IfcBeam* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcArbitraryOpenProfileDef>(const DB& db, const LIST& params, IfcArbitraryOpenProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProfileDef*>(in));
+	if (params.GetSize() < 3) { throw STEP::TypeError("expected 3 arguments to IfcArbitraryOpenProfileDef"); }    do { // convert the 'Curve' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) { in->ObjectHelper<Assimp::IFC::IfcArbitraryOpenProfileDef,1>::aux_is_derived[0]=true; break; }
+        try { GenericConvert( in->Curve, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 2 to IfcArbitraryOpenProfileDef to be a `IfcBoundedCurve`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCenterLineProfileDef>(const DB& db, const LIST& params, IfcCenterLineProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcArbitraryOpenProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTimeSeriesSchedule>(const DB& db, const LIST& params, IfcTimeSeriesSchedule* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRoundedEdgeFeature>(const DB& db, const LIST& params, IfcRoundedEdgeFeature* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEdgeFeature*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcIShapeProfileDef>(const DB& db, const LIST& params, IfcIShapeProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcSpaceHeaterType>(const DB& db, const LIST& params, IfcSpaceHeaterType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFlowStorageDevice>(const DB& db, const LIST& params, IfcFlowStorageDevice* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRevolvedAreaSolid>(const DB& db, const LIST& params, IfcRevolvedAreaSolid* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSweptAreaSolid*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDoor>(const DB& db, const LIST& params, IfcDoor* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElement*>(in));
+	if (params.GetSize() < 10) { throw STEP::TypeError("expected 10 arguments to IfcDoor"); }    do { // convert the 'OverallHeight' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->OverallHeight, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 8 to IfcDoor to be a `IfcPositiveLengthMeasure`")); }
+    } while(0);
+    do { // convert the 'OverallWidth' argument
+        const DataType* arg = params[base++];
+        if (dynamic_cast<const UNSET*>(&*arg)) break;
+        try { GenericConvert( in->OverallWidth, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 9 to IfcDoor to be a `IfcPositiveLengthMeasure`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEllipse>(const DB& db, const LIST& params, IfcEllipse* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcConic*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTubeBundleType>(const DB& db, const LIST& params, IfcTubeBundleType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAngularDimension>(const DB& db, const LIST& params, IfcAngularDimension* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDimensionCurveDirectedCallout*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFaceBasedSurfaceModel>(const DB& db, const LIST& params, IfcFaceBasedSurfaceModel* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCraneRailFShapeProfileDef>(const DB& db, const LIST& params, IfcCraneRailFShapeProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcColumnType>(const DB& db, const LIST& params, IfcColumnType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBuildingElementType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTShapeProfileDef>(const DB& db, const LIST& params, IfcTShapeProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcEnergyConversionDevice>(const DB& db, const LIST& params, IfcEnergyConversionDevice* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDistributionFlowElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcWorkSchedule>(const DB& db, const LIST& params, IfcWorkSchedule* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcWorkControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcZone>(const DB& db, const LIST& params, IfcZone* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGroup*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcTransportElement>(const DB& db, const LIST& params, IfcTransportElement* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcElement*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcGeometricRepresentationSubContext>(const DB& db, const LIST& params, IfcGeometricRepresentationSubContext* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationContext*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLShapeProfileDef>(const DB& db, const LIST& params, IfcLShapeProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcParameterizedProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcGeometricCurveSet>(const DB& db, const LIST& params, IfcGeometricCurveSet* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricSet*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcActor>(const DB& db, const LIST& params, IfcActor* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcObject*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcOccupant>(const DB& db, const LIST& params, IfcOccupant* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcActor*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBooleanClippingResult>(const DB& db, const LIST& params, IfcBooleanClippingResult* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBooleanResult*>(in));
+	if (params.GetSize() < 3) { throw STEP::TypeError("expected 3 arguments to IfcBooleanClippingResult"); }	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAnnotationFillArea>(const DB& db, const LIST& params, IfcAnnotationFillArea* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGeometricRepresentationItem*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcLightSourceSpot>(const DB& db, const LIST& params, IfcLightSourceSpot* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcLightSourcePositional*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcFireSuppressionTerminalType>(const DB& db, const LIST& params, IfcFireSuppressionTerminalType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcElectricGeneratorType>(const DB& db, const LIST& params, IfcElectricGeneratorType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEnergyConversionDeviceType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcInventory>(const DB& db, const LIST& params, IfcInventory* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGroup*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPolyline>(const DB& db, const LIST& params, IfcPolyline* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcBoundedCurve*>(in));
+	if (params.GetSize() < 1) { throw STEP::TypeError("expected 1 arguments to IfcPolyline"); }    do { // convert the 'Points' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->Points, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcPolyline to be a `LIST [2:?] OF IfcCartesianPoint`")); }
+    } while(0);
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcBoxedHalfSpace>(const DB& db, const LIST& params, IfcBoxedHalfSpace* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcHalfSpaceSolid*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAirTerminalType>(const DB& db, const LIST& params, IfcAirTerminalType* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcFlowTerminalType*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcDistributionPort>(const DB& db, const LIST& params, IfcDistributionPort* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcPort*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCostItem>(const DB& db, const LIST& params, IfcCostItem* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcControl*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuredDimensionCallout>(const DB& db, const LIST& params, IfcStructuredDimensionCallout* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcDraughtingCallout*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcStructuralResultGroup>(const DB& db, const LIST& params, IfcStructuralResultGroup* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcGroup*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcOrientedEdge>(const DB& db, const LIST& params, IfcOrientedEdge* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcEdge*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcCsgSolid>(const DB& db, const LIST& params, IfcCsgSolid* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcSolidModel*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcPlanarBox>(const DB& db, const LIST& params, IfcPlanarBox* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcPlanarExtent*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcMaterialDefinitionRepresentation>(const DB& db, const LIST& params, IfcMaterialDefinitionRepresentation* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcProductRepresentation*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcAsymmetricIShapeProfileDef>(const DB& db, const LIST& params, IfcAsymmetricIShapeProfileDef* in)
+{
+	size_t base = GenericFill(db,params,static_cast<IfcIShapeProfileDef*>(in));
+// this data structure is not used yet, so there is no code generated to fill its members
+	return base;
+}
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<IfcRepresentationMap>(const DB& db, const LIST& params, IfcRepresentationMap* in)
+{
+	size_t base = 0;
+	if (params.GetSize() < 2) { throw STEP::TypeError("expected 2 arguments to IfcRepresentationMap"); }    do { // convert the 'MappingOrigin' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->MappingOrigin, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 0 to IfcRepresentationMap to be a `IfcAxis2Placement`")); }
+    } while(0);
+    do { // convert the 'MappedRepresentation' argument
+        const DataType* arg = params[base++];
+        try { GenericConvert( in->MappedRepresentation, *arg, db ); break; } 
+        catch (const TypeError& t) { throw TypeError(t.what() + std::string(" - expected argument 1 to IfcRepresentationMap to be a `IfcRepresentation`")); }
+    } while(0);
+	return base;
+}
+
+} // ! STEP
+} // ! Assimp
+
+#endif
diff --git a/code/IFCReaderGen.h b/code/IFCReaderGen.h
new file mode 100644
index 000000000..e52279228
--- /dev/null
+++ b/code/IFCReaderGen.h
@@ -0,0 +1,4210 @@
+/*
+Open Asset Import Library (ASSIMP)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2010, ASSIMP Development Team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the ASSIMP team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the ASSIMP Development Team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** MACHINE-GENERATED by scripts/ICFImporter/CppGenerator.py */
+
+#ifndef INCLUDED_IFC_READER_GEN_H
+#define INCLUDED_IFC_READER_GEN_H
+
+#include "STEPFile.h"
+
+namespace Assimp {
+namespace IFC {
+	using namespace STEP;
+	using namespace STEP::EXPRESS;
+	
+	
+	struct NotImplemented : public ObjectHelper<NotImplemented,0> {
+		
+	};
+	
+
+	// ******************************************************************************
+	// IFC Custom data types
+	// ******************************************************************************
+
+
+    // C++ wrapper type for IfcSoundPowerMeasure
+    typedef REAL IfcSoundPowerMeasure;
+    // C++ wrapper type for IfcDoorStyleOperationEnum
+    typedef ENUMERATION IfcDoorStyleOperationEnum;
+    // C++ wrapper type for IfcRotationalFrequencyMeasure
+    typedef REAL IfcRotationalFrequencyMeasure;
+    // C++ wrapper type for IfcCharacterStyleSelect
+    typedef SELECT IfcCharacterStyleSelect;
+    // C++ wrapper type for IfcElectricTimeControlTypeEnum
+    typedef ENUMERATION IfcElectricTimeControlTypeEnum;
+    // C++ wrapper type for IfcAirTerminalTypeEnum
+    typedef ENUMERATION IfcAirTerminalTypeEnum;
+    // C++ wrapper type for IfcProjectOrderTypeEnum
+    typedef ENUMERATION IfcProjectOrderTypeEnum;
+    // C++ wrapper type for IfcSequenceEnum
+    typedef ENUMERATION IfcSequenceEnum;
+    // C++ wrapper type for IfcSpecificHeatCapacityMeasure
+    typedef REAL IfcSpecificHeatCapacityMeasure;
+    // C++ wrapper type for IfcHeatingValueMeasure
+    typedef REAL IfcHeatingValueMeasure;
+    // C++ wrapper type for IfcRibPlateDirectionEnum
+    typedef ENUMERATION IfcRibPlateDirectionEnum;
+    // C++ wrapper type for IfcSensorTypeEnum
+    typedef ENUMERATION IfcSensorTypeEnum;
+    // C++ wrapper type for IfcElectricHeaterTypeEnum
+    typedef ENUMERATION IfcElectricHeaterTypeEnum;
+    // C++ wrapper type for IfcObjectiveEnum
+    typedef ENUMERATION IfcObjectiveEnum;
+    // C++ wrapper type for IfcTextStyleSelect
+    typedef SELECT IfcTextStyleSelect;
+    // C++ wrapper type for IfcColumnTypeEnum
+    typedef ENUMERATION IfcColumnTypeEnum;
+    // C++ wrapper type for IfcGasTerminalTypeEnum
+    typedef ENUMERATION IfcGasTerminalTypeEnum;
+    // C++ wrapper type for IfcMassDensityMeasure
+    typedef REAL IfcMassDensityMeasure;
+    // C++ wrapper type for IfcSimpleValue
+    typedef SELECT IfcSimpleValue;
+    // C++ wrapper type for IfcElectricConductanceMeasure
+    typedef REAL IfcElectricConductanceMeasure;
+    // C++ wrapper type for IfcBuildingElementProxyTypeEnum
+    typedef ENUMERATION IfcBuildingElementProxyTypeEnum;
+    // C++ wrapper type for IfcJunctionBoxTypeEnum
+    typedef ENUMERATION IfcJunctionBoxTypeEnum;
+    // C++ wrapper type for IfcModulusOfElasticityMeasure
+    typedef REAL IfcModulusOfElasticityMeasure;
+    // C++ wrapper type for IfcActionSourceTypeEnum
+    typedef ENUMERATION IfcActionSourceTypeEnum;
+    // C++ wrapper type for IfcSIUnitName
+    typedef ENUMERATION IfcSIUnitName;
+    // C++ wrapper type for IfcRotationalMassMeasure
+    typedef REAL IfcRotationalMassMeasure;
+    // C++ wrapper type for IfcMemberTypeEnum
+    typedef ENUMERATION IfcMemberTypeEnum;
+    // C++ wrapper type for IfcTextDecoration
+    typedef STRING IfcTextDecoration;
+    // C++ wrapper type for IfcPositiveLengthMeasure
+    typedef REAL IfcPositiveLengthMeasure;
+    // C++ wrapper type for IfcAmountOfSubstanceMeasure
+    typedef REAL IfcAmountOfSubstanceMeasure;
+    // C++ wrapper type for IfcDoorStyleConstructionEnum
+    typedef ENUMERATION IfcDoorStyleConstructionEnum;
+    // C++ wrapper type for IfcAngularVelocityMeasure
+    typedef REAL IfcAngularVelocityMeasure;
+    // C++ wrapper type for IfcDirectionSenseEnum
+    typedef ENUMERATION IfcDirectionSenseEnum;
+    // C++ wrapper type for IfcNullStyle
+    typedef ENUMERATION IfcNullStyle;
+    // C++ wrapper type for IfcMonthInYearNumber
+    typedef INTEGER IfcMonthInYearNumber;
+    // C++ wrapper type for IfcRampFlightTypeEnum
+    typedef ENUMERATION IfcRampFlightTypeEnum;
+    // C++ wrapper type for IfcWindowStyleOperationEnum
+    typedef ENUMERATION IfcWindowStyleOperationEnum;
+    // C++ wrapper type for IfcCurvatureMeasure
+    typedef REAL IfcCurvatureMeasure;
+    // C++ wrapper type for IfcBooleanOperator
+    typedef ENUMERATION IfcBooleanOperator;
+    // C++ wrapper type for IfcDuctFittingTypeEnum
+    typedef ENUMERATION IfcDuctFittingTypeEnum;
+    // C++ wrapper type for IfcCurrencyEnum
+    typedef ENUMERATION IfcCurrencyEnum;
+    // C++ wrapper type for IfcObjectTypeEnum
+    typedef ENUMERATION IfcObjectTypeEnum;
+    // C++ wrapper type for IfcThermalLoadTypeEnum
+    typedef ENUMERATION IfcThermalLoadTypeEnum;
+    // C++ wrapper type for IfcIonConcentrationMeasure
+    typedef REAL IfcIonConcentrationMeasure;
+    // C++ wrapper type for IfcObjectReferenceSelect
+    typedef SELECT IfcObjectReferenceSelect;
+    // C++ wrapper type for IfcClassificationNotationSelect
+    typedef SELECT IfcClassificationNotationSelect;
+    // C++ wrapper type for IfcBSplineCurveForm
+    typedef ENUMERATION IfcBSplineCurveForm;
+    // C++ wrapper type for IfcElementCompositionEnum
+    typedef ENUMERATION IfcElementCompositionEnum;
+    // C++ wrapper type for IfcDraughtingCalloutElement
+    typedef SELECT IfcDraughtingCalloutElement;
+    // C++ wrapper type for IfcFillStyleSelect
+    typedef SELECT IfcFillStyleSelect;
+    // C++ wrapper type for IfcHeatFluxDensityMeasure
+    typedef REAL IfcHeatFluxDensityMeasure;
+    // C++ wrapper type for IfcGeometricProjectionEnum
+    typedef ENUMERATION IfcGeometricProjectionEnum;
+    // C++ wrapper type for IfcFontVariant
+    typedef STRING IfcFontVariant;
+    // C++ wrapper type for IfcThermalResistanceMeasure
+    typedef REAL IfcThermalResistanceMeasure;
+    // C++ wrapper type for IfcReflectanceMethodEnum
+    typedef ENUMERATION IfcReflectanceMethodEnum;
+    // C++ wrapper type for IfcSlabTypeEnum
+    typedef ENUMERATION IfcSlabTypeEnum;
+    // C++ wrapper type for IfcPositiveRatioMeasure
+    typedef REAL IfcPositiveRatioMeasure;
+    // C++ wrapper type for IfcInternalOrExternalEnum
+    typedef ENUMERATION IfcInternalOrExternalEnum;
+    // C++ wrapper type for IfcDimensionExtentUsage
+    typedef ENUMERATION IfcDimensionExtentUsage;
+    // C++ wrapper type for IfcPipeFittingTypeEnum
+    typedef ENUMERATION IfcPipeFittingTypeEnum;
+    // C++ wrapper type for IfcSanitaryTerminalTypeEnum
+    typedef ENUMERATION IfcSanitaryTerminalTypeEnum;
+    // C++ wrapper type for IfcMinuteInHour
+    typedef INTEGER IfcMinuteInHour;
+    // C++ wrapper type for IfcWallTypeEnum
+    typedef ENUMERATION IfcWallTypeEnum;
+    // C++ wrapper type for IfcMolecularWeightMeasure
+    typedef REAL IfcMolecularWeightMeasure;
+    // C++ wrapper type for IfcUnitaryEquipmentTypeEnum
+    typedef ENUMERATION IfcUnitaryEquipmentTypeEnum;
+    // C++ wrapper type for IfcProcedureTypeEnum
+    typedef ENUMERATION IfcProcedureTypeEnum;
+    // C++ wrapper type for IfcDistributionChamberElementTypeEnum
+    typedef ENUMERATION IfcDistributionChamberElementTypeEnum;
+    // C++ wrapper type for IfcTextPath
+    typedef ENUMERATION IfcTextPath;
+    // C++ wrapper type for IfcCostScheduleTypeEnum
+    typedef ENUMERATION IfcCostScheduleTypeEnum;
+    // C++ wrapper type for IfcShell
+    typedef SELECT IfcShell;
+    // C++ wrapper type for IfcLinearMomentMeasure
+    typedef REAL IfcLinearMomentMeasure;
+    // C++ wrapper type for IfcElectricCurrentMeasure
+    typedef REAL IfcElectricCurrentMeasure;
+    // C++ wrapper type for IfcDaylightSavingHour
+    typedef INTEGER IfcDaylightSavingHour;
+    // C++ wrapper type for IfcNormalisedRatioMeasure
+    typedef REAL IfcNormalisedRatioMeasure;
+    // C++ wrapper type for IfcFanTypeEnum
+    typedef ENUMERATION IfcFanTypeEnum;
+    // C++ wrapper type for IfcContextDependentMeasure
+    typedef REAL IfcContextDependentMeasure;
+    // C++ wrapper type for IfcAheadOrBehind
+    typedef ENUMERATION IfcAheadOrBehind;
+    // C++ wrapper type for IfcFontStyle
+    typedef STRING IfcFontStyle;
+    // C++ wrapper type for IfcCooledBeamTypeEnum
+    typedef ENUMERATION IfcCooledBeamTypeEnum;
+    // C++ wrapper type for IfcSurfaceStyleElementSelect
+    typedef SELECT IfcSurfaceStyleElementSelect;
+    // C++ wrapper type for IfcYearNumber
+    typedef INTEGER IfcYearNumber;
+    // C++ wrapper type for IfcLabel
+    typedef STRING IfcLabel;
+    // C++ wrapper type for IfcTimeStamp
+    typedef INTEGER IfcTimeStamp;
+    // C++ wrapper type for IfcFireSuppressionTerminalTypeEnum
+    typedef ENUMERATION IfcFireSuppressionTerminalTypeEnum;
+    // C++ wrapper type for IfcDocumentConfidentialityEnum
+    typedef ENUMERATION IfcDocumentConfidentialityEnum;
+    // C++ wrapper type for IfcColourOrFactor
+    typedef SELECT IfcColourOrFactor;
+    // C++ wrapper type for IfcAirTerminalBoxTypeEnum
+    typedef ENUMERATION IfcAirTerminalBoxTypeEnum;
+    // C++ wrapper type for IfcNumericMeasure
+    typedef NUMBER IfcNumericMeasure;
+    // C++ wrapper type for IfcDerivedUnitEnum
+    typedef ENUMERATION IfcDerivedUnitEnum;
+    // C++ wrapper type for IfcCurveOrEdgeCurve
+    typedef SELECT IfcCurveOrEdgeCurve;
+    // C++ wrapper type for IfcLightEmissionSourceEnum
+    typedef ENUMERATION IfcLightEmissionSourceEnum;
+    // C++ wrapper type for IfcKinematicViscosityMeasure
+    typedef REAL IfcKinematicViscosityMeasure;
+    // C++ wrapper type for IfcBoxAlignment
+    typedef STRING IfcBoxAlignment;
+    // C++ wrapper type for IfcDocumentSelect
+    typedef SELECT IfcDocumentSelect;
+    // C++ wrapper type for IfcCableCarrierFittingTypeEnum
+    typedef ENUMERATION IfcCableCarrierFittingTypeEnum;
+    // C++ wrapper type for IfcPumpTypeEnum
+    typedef ENUMERATION IfcPumpTypeEnum;
+    // C++ wrapper type for IfcHourInDay
+    typedef INTEGER IfcHourInDay;
+    // C++ wrapper type for IfcProjectOrderRecordTypeEnum
+    typedef ENUMERATION IfcProjectOrderRecordTypeEnum;
+    // C++ wrapper type for IfcWindowStyleConstructionEnum
+    typedef ENUMERATION IfcWindowStyleConstructionEnum;
+    // C++ wrapper type for IfcPresentationStyleSelect
+    typedef SELECT IfcPresentationStyleSelect;
+    // C++ wrapper type for IfcCableSegmentTypeEnum
+    typedef ENUMERATION IfcCableSegmentTypeEnum;
+    // C++ wrapper type for IfcWasteTerminalTypeEnum
+    typedef ENUMERATION IfcWasteTerminalTypeEnum;
+    // C++ wrapper type for IfcIsothermalMoistureCapacityMeasure
+    typedef REAL IfcIsothermalMoistureCapacityMeasure;
+    // C++ wrapper type for IfcIdentifier
+    typedef STRING IfcIdentifier;
+    // C++ wrapper type for IfcRadioActivityMeasure
+    typedef REAL IfcRadioActivityMeasure;
+    // C++ wrapper type for IfcSymbolStyleSelect
+    typedef SELECT IfcSymbolStyleSelect;
+    // C++ wrapper type for IfcRoofTypeEnum
+    typedef ENUMERATION IfcRoofTypeEnum;
+    // C++ wrapper type for IfcReal
+    typedef REAL IfcReal;
+    // C++ wrapper type for IfcRoleEnum
+    typedef ENUMERATION IfcRoleEnum;
+    // C++ wrapper type for IfcMeasureValue
+    typedef SELECT IfcMeasureValue;
+    // C++ wrapper type for IfcPileTypeEnum
+    typedef ENUMERATION IfcPileTypeEnum;
+    // C++ wrapper type for IfcElectricCurrentEnum
+    typedef ENUMERATION IfcElectricCurrentEnum;
+    // C++ wrapper type for IfcTextTransformation
+    typedef STRING IfcTextTransformation;
+    // C++ wrapper type for IfcFilterTypeEnum
+    typedef ENUMERATION IfcFilterTypeEnum;
+    // C++ wrapper type for IfcTransformerTypeEnum
+    typedef ENUMERATION IfcTransformerTypeEnum;
+    // C++ wrapper type for IfcSurfaceSide
+    typedef ENUMERATION IfcSurfaceSide;
+    // C++ wrapper type for IfcThermalTransmittanceMeasure
+    typedef REAL IfcThermalTransmittanceMeasure;
+    // C++ wrapper type for IfcTubeBundleTypeEnum
+    typedef ENUMERATION IfcTubeBundleTypeEnum;
+    // C++ wrapper type for IfcLightFixtureTypeEnum
+    typedef ENUMERATION IfcLightFixtureTypeEnum;
+    // C++ wrapper type for IfcInductanceMeasure
+    typedef REAL IfcInductanceMeasure;
+    // C++ wrapper type for IfcGlobalOrLocalEnum
+    typedef ENUMERATION IfcGlobalOrLocalEnum;
+    // C++ wrapper type for IfcOutletTypeEnum
+    typedef ENUMERATION IfcOutletTypeEnum;
+    // C++ wrapper type for IfcWorkControlTypeEnum
+    typedef ENUMERATION IfcWorkControlTypeEnum;
+    // C++ wrapper type for IfcWarpingMomentMeasure
+    typedef REAL IfcWarpingMomentMeasure;
+    // C++ wrapper type for IfcDynamicViscosityMeasure
+    typedef REAL IfcDynamicViscosityMeasure;
+    // C++ wrapper type for IfcEnergySequenceEnum
+    typedef ENUMERATION IfcEnergySequenceEnum;
+    // C++ wrapper type for IfcFillAreaStyleTileShapeSelect
+    typedef SELECT IfcFillAreaStyleTileShapeSelect;
+    // C++ wrapper type for IfcPointOrVertexPoint
+    typedef SELECT IfcPointOrVertexPoint;
+    // C++ wrapper type for IfcVibrationIsolatorTypeEnum
+    typedef ENUMERATION IfcVibrationIsolatorTypeEnum;
+    // C++ wrapper type for IfcTankTypeEnum
+    typedef ENUMERATION IfcTankTypeEnum;
+    // C++ wrapper type for IfcTimeSeriesDataTypeEnum
+    typedef ENUMERATION IfcTimeSeriesDataTypeEnum;
+    // C++ wrapper type for IfcSurfaceTextureEnum
+    typedef ENUMERATION IfcSurfaceTextureEnum;
+    // C++ wrapper type for IfcAddressTypeEnum
+    typedef ENUMERATION IfcAddressTypeEnum;
+    // C++ wrapper type for IfcChillerTypeEnum
+    typedef ENUMERATION IfcChillerTypeEnum;
+    // C++ wrapper type for IfcLightDistributionCurveEnum
+    typedef ENUMERATION IfcLightDistributionCurveEnum;
+    // C++ wrapper type for IfcReinforcingBarRoleEnum
+    typedef ENUMERATION IfcReinforcingBarRoleEnum;
+    // C++ wrapper type for IfcResourceConsumptionEnum
+    typedef ENUMERATION IfcResourceConsumptionEnum;
+    // C++ wrapper type for IfcCsgSelect
+    typedef SELECT IfcCsgSelect;
+    // C++ wrapper type for IfcModulusOfLinearSubgradeReactionMeasure
+    typedef REAL IfcModulusOfLinearSubgradeReactionMeasure;
+    // C++ wrapper type for IfcEvaporatorTypeEnum
+    typedef ENUMERATION IfcEvaporatorTypeEnum;
+    // C++ wrapper type for IfcTimeSeriesScheduleTypeEnum
+    typedef ENUMERATION IfcTimeSeriesScheduleTypeEnum;
+    // C++ wrapper type for IfcDayInMonthNumber
+    typedef INTEGER IfcDayInMonthNumber;
+    // C++ wrapper type for IfcElectricMotorTypeEnum
+    typedef ENUMERATION IfcElectricMotorTypeEnum;
+    // C++ wrapper type for IfcThermalConductivityMeasure
+    typedef REAL IfcThermalConductivityMeasure;
+    // C++ wrapper type for IfcEnergyMeasure
+    typedef REAL IfcEnergyMeasure;
+    // C++ wrapper type for IfcRotationalStiffnessMeasure
+    typedef REAL IfcRotationalStiffnessMeasure;
+    // C++ wrapper type for IfcDerivedMeasureValue
+    typedef SELECT IfcDerivedMeasureValue;
+    // C++ wrapper type for IfcDoorPanelOperationEnum
+    typedef ENUMERATION IfcDoorPanelOperationEnum;
+    // C++ wrapper type for IfcCurveStyleFontSelect
+    typedef SELECT IfcCurveStyleFontSelect;
+    // C++ wrapper type for IfcWindowPanelOperationEnum
+    typedef ENUMERATION IfcWindowPanelOperationEnum;
+    // C++ wrapper type for IfcDataOriginEnum
+    typedef ENUMERATION IfcDataOriginEnum;
+    // C++ wrapper type for IfcStairTypeEnum
+    typedef ENUMERATION IfcStairTypeEnum;
+    // C++ wrapper type for IfcRailingTypeEnum
+    typedef ENUMERATION IfcRailingTypeEnum;
+    // C++ wrapper type for IfcPowerMeasure
+    typedef REAL IfcPowerMeasure;
+    // C++ wrapper type for IfcStackTerminalTypeEnum
+    typedef ENUMERATION IfcStackTerminalTypeEnum;
+    // C++ wrapper type for IfcHatchLineDistanceSelect
+    typedef SELECT IfcHatchLineDistanceSelect;
+    // C++ wrapper type for IfcTrimmingSelect
+    typedef SELECT IfcTrimmingSelect;
+    // C++ wrapper type for IfcThermalExpansionCoefficientMeasure
+    typedef REAL IfcThermalExpansionCoefficientMeasure;
+    // C++ wrapper type for IfcLightDistributionDataSourceSelect
+    typedef SELECT IfcLightDistributionDataSourceSelect;
+    // C++ wrapper type for IfcTorqueMeasure
+    typedef REAL IfcTorqueMeasure;
+    // C++ wrapper type for IfcMassPerLengthMeasure
+    typedef REAL IfcMassPerLengthMeasure;
+    // C++ wrapper type for IfcValveTypeEnum
+    typedef ENUMERATION IfcValveTypeEnum;
+    // C++ wrapper type for IfcWindowPanelPositionEnum
+    typedef ENUMERATION IfcWindowPanelPositionEnum;
+    // C++ wrapper type for IfcSurfaceOrFaceSurface
+    typedef SELECT IfcSurfaceOrFaceSurface;
+    // C++ wrapper type for IfcPropertySourceEnum
+    typedef ENUMERATION IfcPropertySourceEnum;
+    // C++ wrapper type for IfcCableCarrierSegmentTypeEnum
+    typedef ENUMERATION IfcCableCarrierSegmentTypeEnum;
+    // C++ wrapper type for IfcCountMeasure
+    typedef NUMBER IfcCountMeasure;
+    // C++ wrapper type for IfcFontWeight
+    typedef STRING IfcFontWeight;
+    // C++ wrapper type for IfcPhysicalOrVirtualEnum
+    typedef ENUMERATION IfcPhysicalOrVirtualEnum;
+    // C++ wrapper type for IfcSpaceTypeEnum
+    typedef ENUMERATION IfcSpaceTypeEnum;
+    // C++ wrapper type for IfcVolumetricFlowRateMeasure
+    typedef REAL IfcVolumetricFlowRateMeasure;
+    // C++ wrapper type for IfcLuminousFluxMeasure
+    typedef REAL IfcLuminousFluxMeasure;
+    // C++ wrapper type for IfcEvaporativeCoolerTypeEnum
+    typedef ENUMERATION IfcEvaporativeCoolerTypeEnum;
+    // C++ wrapper type for IfcLayeredItem
+    typedef SELECT IfcLayeredItem;
+    // C++ wrapper type for IfcModulusOfSubgradeReactionMeasure
+    typedef REAL IfcModulusOfSubgradeReactionMeasure;
+    // C++ wrapper type for IfcHeatExchangerTypeEnum
+    typedef ENUMERATION IfcHeatExchangerTypeEnum;
+    // C++ wrapper type for IfcProtectiveDeviceTypeEnum
+    typedef ENUMERATION IfcProtectiveDeviceTypeEnum;
+    // C++ wrapper type for IfcDamperTypeEnum
+    typedef ENUMERATION IfcDamperTypeEnum;
+    // C++ wrapper type for IfcControllerTypeEnum
+    typedef ENUMERATION IfcControllerTypeEnum;
+    // C++ wrapper type for IfcMassFlowRateMeasure
+    typedef REAL IfcMassFlowRateMeasure;
+    // C++ wrapper type for IfcAssemblyPlaceEnum
+    typedef ENUMERATION IfcAssemblyPlaceEnum;
+    // C++ wrapper type for IfcAreaMeasure
+    typedef REAL IfcAreaMeasure;
+    // C++ wrapper type for IfcServiceLifeFactorTypeEnum
+    typedef ENUMERATION IfcServiceLifeFactorTypeEnum;
+    // C++ wrapper type for IfcVolumeMeasure
+    typedef REAL IfcVolumeMeasure;
+    // C++ wrapper type for IfcBeamTypeEnum
+    typedef ENUMERATION IfcBeamTypeEnum;
+    // C++ wrapper type for IfcStateEnum
+    typedef ENUMERATION IfcStateEnum;
+    // C++ wrapper type for IfcSpaceHeaterTypeEnum
+    typedef ENUMERATION IfcSpaceHeaterTypeEnum;
+    // C++ wrapper type for IfcSectionTypeEnum
+    typedef ENUMERATION IfcSectionTypeEnum;
+    // C++ wrapper type for IfcFootingTypeEnum
+    typedef ENUMERATION IfcFootingTypeEnum;
+    // C++ wrapper type for IfcMonetaryMeasure
+    typedef REAL IfcMonetaryMeasure;
+    // C++ wrapper type for IfcLoadGroupTypeEnum
+    typedef ENUMERATION IfcLoadGroupTypeEnum;
+    // C++ wrapper type for IfcElectricGeneratorTypeEnum
+    typedef ENUMERATION IfcElectricGeneratorTypeEnum;
+    // C++ wrapper type for IfcFlowMeterTypeEnum
+    typedef ENUMERATION IfcFlowMeterTypeEnum;
+    // C++ wrapper type for IfcMaterialSelect
+    typedef SELECT IfcMaterialSelect;
+    // C++ wrapper type for IfcAnalysisModelTypeEnum
+    typedef ENUMERATION IfcAnalysisModelTypeEnum;
+    // C++ wrapper type for IfcTemperatureGradientMeasure
+    typedef REAL IfcTemperatureGradientMeasure;
+    // C++ wrapper type for IfcModulusOfRotationalSubgradeReactionMeasure
+    typedef REAL IfcModulusOfRotationalSubgradeReactionMeasure;
+    // C++ wrapper type for IfcColour
+    typedef SELECT IfcColour;
+    // C++ wrapper type for IfcCurtainWallTypeEnum
+    typedef ENUMERATION IfcCurtainWallTypeEnum;
+    // C++ wrapper type for IfcMetricValueSelect
+    typedef SELECT IfcMetricValueSelect;
+    // C++ wrapper type for IfcTextAlignment
+    typedef STRING IfcTextAlignment;
+    // C++ wrapper type for IfcDoorPanelPositionEnum
+    typedef ENUMERATION IfcDoorPanelPositionEnum;
+    // C++ wrapper type for IfcPlateTypeEnum
+    typedef ENUMERATION IfcPlateTypeEnum;
+    // C++ wrapper type for IfcSectionalAreaIntegralMeasure
+    typedef REAL IfcSectionalAreaIntegralMeasure;
+    // C++ wrapper type for IfcPresentableText
+    typedef STRING IfcPresentableText;
+    // C++ wrapper type for IfcVaporPermeabilityMeasure
+    typedef REAL IfcVaporPermeabilityMeasure;
+    // C++ wrapper type for IfcStructuralSurfaceTypeEnum
+    typedef ENUMERATION IfcStructuralSurfaceTypeEnum;
+    // C++ wrapper type for IfcLinearVelocityMeasure
+    typedef REAL IfcLinearVelocityMeasure;
+    // C++ wrapper type for IfcIntegerCountRateMeasure
+    typedef INTEGER IfcIntegerCountRateMeasure;
+    // C++ wrapper type for IfcAirToAirHeatRecoveryTypeEnum
+    typedef ENUMERATION IfcAirToAirHeatRecoveryTypeEnum;
+    // C++ wrapper type for IfcDocumentStatusEnum
+    typedef ENUMERATION IfcDocumentStatusEnum;
+    // C++ wrapper type for IfcLengthMeasure
+    typedef REAL IfcLengthMeasure;
+    // C++ wrapper type for IfcPlanarForceMeasure
+    typedef REAL IfcPlanarForceMeasure;
+    // C++ wrapper type for IfcBooleanOperand
+    typedef SELECT IfcBooleanOperand;
+    // C++ wrapper type for IfcInteger
+    typedef INTEGER IfcInteger;
+    // C++ wrapper type for IfcRampTypeEnum
+    typedef ENUMERATION IfcRampTypeEnum;
+    // C++ wrapper type for IfcActorSelect
+    typedef SELECT IfcActorSelect;
+    // C++ wrapper type for IfcElectricChargeMeasure
+    typedef REAL IfcElectricChargeMeasure;
+    // C++ wrapper type for IfcGeometricSetSelect
+    typedef SELECT IfcGeometricSetSelect;
+    // C++ wrapper type for IfcConnectionTypeEnum
+    typedef ENUMERATION IfcConnectionTypeEnum;
+    // C++ wrapper type for IfcValue
+    typedef SELECT IfcValue;
+    // C++ wrapper type for IfcCoolingTowerTypeEnum
+    typedef ENUMERATION IfcCoolingTowerTypeEnum;
+    // C++ wrapper type for IfcPlaneAngleMeasure
+    typedef REAL IfcPlaneAngleMeasure;
+    // C++ wrapper type for IfcSwitchingDeviceTypeEnum
+    typedef ENUMERATION IfcSwitchingDeviceTypeEnum;
+    // C++ wrapper type for IfcFlowDirectionEnum
+    typedef ENUMERATION IfcFlowDirectionEnum;
+    // C++ wrapper type for IfcThermalLoadSourceEnum
+    typedef ENUMERATION IfcThermalLoadSourceEnum;
+    // C++ wrapper type for IfcTextFontSelect
+    typedef SELECT IfcTextFontSelect;
+    // C++ wrapper type for IfcSpecularHighlightSelect
+    typedef SELECT IfcSpecularHighlightSelect;
+    // C++ wrapper type for IfcAnalysisTheoryTypeEnum
+    typedef ENUMERATION IfcAnalysisTheoryTypeEnum;
+    // C++ wrapper type for IfcTextFontName
+    typedef STRING IfcTextFontName;
+    // C++ wrapper type for IfcElectricVoltageMeasure
+    typedef REAL IfcElectricVoltageMeasure;
+    // C++ wrapper type for IfcTendonTypeEnum
+    typedef ENUMERATION IfcTendonTypeEnum;
+    // C++ wrapper type for IfcSoundPressureMeasure
+    typedef REAL IfcSoundPressureMeasure;
+    // C++ wrapper type for IfcElectricDistributionPointFunctionEnum
+    typedef ENUMERATION IfcElectricDistributionPointFunctionEnum;
+    // C++ wrapper type for IfcSpecularRoughness
+    typedef REAL IfcSpecularRoughness;
+    // C++ wrapper type for IfcActionTypeEnum
+    typedef ENUMERATION IfcActionTypeEnum;
+    // C++ wrapper type for IfcReinforcingBarSurfaceEnum
+    typedef ENUMERATION IfcReinforcingBarSurfaceEnum;
+    // C++ wrapper type for IfcHumidifierTypeEnum
+    typedef ENUMERATION IfcHumidifierTypeEnum;
+    // C++ wrapper type for IfcIlluminanceMeasure
+    typedef REAL IfcIlluminanceMeasure;
+    // C++ wrapper type for IfcLibrarySelect
+    typedef SELECT IfcLibrarySelect;
+    // C++ wrapper type for IfcText
+    typedef STRING IfcText;
+    // C++ wrapper type for IfcLayerSetDirectionEnum
+    typedef ENUMERATION IfcLayerSetDirectionEnum;
+    // C++ wrapper type for IfcBoilerTypeEnum
+    typedef ENUMERATION IfcBoilerTypeEnum;
+    // C++ wrapper type for IfcTimeMeasure
+    typedef REAL IfcTimeMeasure;
+    // C++ wrapper type for IfcAccelerationMeasure
+    typedef REAL IfcAccelerationMeasure;
+    // C++ wrapper type for IfcElectricFlowStorageDeviceTypeEnum
+    typedef ENUMERATION IfcElectricFlowStorageDeviceTypeEnum;
+    // C++ wrapper type for IfcLuminousIntensityMeasure
+    typedef REAL IfcLuminousIntensityMeasure;
+    // C++ wrapper type for IfcDefinedSymbolSelect
+    typedef SELECT IfcDefinedSymbolSelect;
+    // C++ wrapper type for IfcUnitEnum
+    typedef ENUMERATION IfcUnitEnum;
+    // C++ wrapper type for IfcInventoryTypeEnum
+    typedef ENUMERATION IfcInventoryTypeEnum;
+    // C++ wrapper type for IfcStructuralActivityAssignmentSelect
+    typedef SELECT IfcStructuralActivityAssignmentSelect;
+    // C++ wrapper type for IfcElementAssemblyTypeEnum
+    typedef ENUMERATION IfcElementAssemblyTypeEnum;
+    // C++ wrapper type for IfcServiceLifeTypeEnum
+    typedef ENUMERATION IfcServiceLifeTypeEnum;
+    // C++ wrapper type for IfcCoveringTypeEnum
+    typedef ENUMERATION IfcCoveringTypeEnum;
+    // C++ wrapper type for IfcStairFlightTypeEnum
+    typedef ENUMERATION IfcStairFlightTypeEnum;
+    // C++ wrapper type for IfcSIPrefix
+    typedef ENUMERATION IfcSIPrefix;
+    // C++ wrapper type for IfcElectricCapacitanceMeasure
+    typedef REAL IfcElectricCapacitanceMeasure;
+    // C++ wrapper type for IfcFlowInstrumentTypeEnum
+    typedef ENUMERATION IfcFlowInstrumentTypeEnum;
+    // C++ wrapper type for IfcThermodynamicTemperatureMeasure
+    typedef REAL IfcThermodynamicTemperatureMeasure;
+    // C++ wrapper type for IfcGloballyUniqueId
+    typedef STRING IfcGloballyUniqueId;
+    // C++ wrapper type for IfcLampTypeEnum
+    typedef ENUMERATION IfcLampTypeEnum;
+    // C++ wrapper type for IfcMagneticFluxMeasure
+    typedef REAL IfcMagneticFluxMeasure;
+    // C++ wrapper type for IfcSolidAngleMeasure
+    typedef REAL IfcSolidAngleMeasure;
+    // C++ wrapper type for IfcFrequencyMeasure
+    typedef REAL IfcFrequencyMeasure;
+    // C++ wrapper type for IfcTransportElementTypeEnum
+    typedef ENUMERATION IfcTransportElementTypeEnum;
+    // C++ wrapper type for IfcSoundScaleEnum
+    typedef ENUMERATION IfcSoundScaleEnum;
+    // C++ wrapper type for IfcPHMeasure
+    typedef REAL IfcPHMeasure;
+    // C++ wrapper type for IfcActuatorTypeEnum
+    typedef ENUMERATION IfcActuatorTypeEnum;
+    // C++ wrapper type for IfcPositivePlaneAngleMeasure
+    typedef REAL IfcPositivePlaneAngleMeasure;
+    // C++ wrapper type for IfcAppliedValueSelect
+    typedef SELECT IfcAppliedValueSelect;
+    // C++ wrapper type for IfcSecondInMinute
+    typedef REAL IfcSecondInMinute;
+    // C++ wrapper type for IfcDuctSegmentTypeEnum
+    typedef ENUMERATION IfcDuctSegmentTypeEnum;
+    // C++ wrapper type for IfcThermalAdmittanceMeasure
+    typedef REAL IfcThermalAdmittanceMeasure;
+    // C++ wrapper type for IfcSpecularExponent
+    typedef REAL IfcSpecularExponent;
+    // C++ wrapper type for IfcDateTimeSelect
+    typedef SELECT IfcDateTimeSelect;
+    // C++ wrapper type for IfcTransitionCode
+    typedef ENUMERATION IfcTransitionCode;
+    // C++ wrapper type for IfcDimensionCount
+    typedef INTEGER IfcDimensionCount;
+    // C++ wrapper type for IfcLinearStiffnessMeasure
+    typedef REAL IfcLinearStiffnessMeasure;
+    // C++ wrapper type for IfcCompoundPlaneAngleMeasure
+    typedef ListOf< INTEGER, 3, 3 > IfcCompoundPlaneAngleMeasure;
+    // C++ wrapper type for IfcElectricApplianceTypeEnum
+    typedef ENUMERATION IfcElectricApplianceTypeEnum;
+    // C++ wrapper type for IfcProfileTypeEnum
+    typedef ENUMERATION IfcProfileTypeEnum;
+    // C++ wrapper type for IfcCurveFontOrScaledCurveFontSelect
+    typedef SELECT IfcCurveFontOrScaledCurveFontSelect;
+    // C++ wrapper type for IfcProjectedOrTrueLengthEnum
+    typedef ENUMERATION IfcProjectedOrTrueLengthEnum;
+    // C++ wrapper type for IfcAbsorbedDoseMeasure
+    typedef REAL IfcAbsorbedDoseMeasure;
+    // C++ wrapper type for IfcParameterValue
+    typedef REAL IfcParameterValue;
+    // C++ wrapper type for IfcPileConstructionEnum
+    typedef ENUMERATION IfcPileConstructionEnum;
+    // C++ wrapper type for IfcMotorConnectionTypeEnum
+    typedef ENUMERATION IfcMotorConnectionTypeEnum;
+    // C++ wrapper type for IfcOccupantTypeEnum
+    typedef ENUMERATION IfcOccupantTypeEnum;
+    // C++ wrapper type for IfcUnit
+    typedef SELECT IfcUnit;
+    // C++ wrapper type for IfcLinearForceMeasure
+    typedef REAL IfcLinearForceMeasure;
+    // C++ wrapper type for IfcCondenserTypeEnum
+    typedef ENUMERATION IfcCondenserTypeEnum;
+    // C++ wrapper type for IfcDescriptiveMeasure
+    typedef STRING IfcDescriptiveMeasure;
+    // C++ wrapper type for IfcMomentOfInertiaMeasure
+    typedef REAL IfcMomentOfInertiaMeasure;
+    // C++ wrapper type for IfcDoseEquivalentMeasure
+    typedef REAL IfcDoseEquivalentMeasure;
+    // C++ wrapper type for IfcOrientationSelect
+    typedef SELECT IfcOrientationSelect;
+    // C++ wrapper type for IfcLogical
+    typedef LOGICAL IfcLogical;
+    // C++ wrapper type for IfcSizeSelect
+    typedef SELECT IfcSizeSelect;
+    // C++ wrapper type for IfcEnvironmentalImpactCategoryEnum
+    typedef ENUMERATION IfcEnvironmentalImpactCategoryEnum;
+    // C++ wrapper type for IfcLogicalOperatorEnum
+    typedef ENUMERATION IfcLogicalOperatorEnum;
+    // C++ wrapper type for IfcCompressorTypeEnum
+    typedef ENUMERATION IfcCompressorTypeEnum;
+    // C++ wrapper type for IfcBenchmarkEnum
+    typedef ENUMERATION IfcBenchmarkEnum;
+    // C++ wrapper type for IfcRatioMeasure
+    typedef REAL IfcRatioMeasure;
+    // C++ wrapper type for IfcVectorOrDirection
+    typedef SELECT IfcVectorOrDirection;
+    // C++ wrapper type for IfcConstraintEnum
+    typedef ENUMERATION IfcConstraintEnum;
+    // C++ wrapper type for IfcAlarmTypeEnum
+    typedef ENUMERATION IfcAlarmTypeEnum;
+    // C++ wrapper type for IfcLuminousIntensityDistributionMeasure
+    typedef REAL IfcLuminousIntensityDistributionMeasure;
+    // C++ wrapper type for IfcArithmeticOperatorEnum
+    typedef ENUMERATION IfcArithmeticOperatorEnum;
+    // C++ wrapper type for IfcAxis2Placement
+    typedef SELECT IfcAxis2Placement;
+    // C++ wrapper type for IfcForceMeasure
+    typedef REAL IfcForceMeasure;
+    // C++ wrapper type for IfcTrimmingPreference
+    typedef ENUMERATION IfcTrimmingPreference;
+    // C++ wrapper type for IfcElectricResistanceMeasure
+    typedef REAL IfcElectricResistanceMeasure;
+    // C++ wrapper type for IfcWarpingConstantMeasure
+    typedef REAL IfcWarpingConstantMeasure;
+    // C++ wrapper type for IfcPipeSegmentTypeEnum
+    typedef ENUMERATION IfcPipeSegmentTypeEnum;
+    // C++ wrapper type for IfcConditionCriterionSelect
+    typedef SELECT IfcConditionCriterionSelect;
+    // C++ wrapper type for IfcShearModulusMeasure
+    typedef REAL IfcShearModulusMeasure;
+    // C++ wrapper type for IfcPressureMeasure
+    typedef REAL IfcPressureMeasure;
+    // C++ wrapper type for IfcDuctSilencerTypeEnum
+    typedef ENUMERATION IfcDuctSilencerTypeEnum;
+    // C++ wrapper type for IfcBoolean
+    typedef BOOLEAN IfcBoolean;
+    // C++ wrapper type for IfcSectionModulusMeasure
+    typedef REAL IfcSectionModulusMeasure;
+    // C++ wrapper type for IfcChangeActionEnum
+    typedef ENUMERATION IfcChangeActionEnum;
+    // C++ wrapper type for IfcCoilTypeEnum
+    typedef ENUMERATION IfcCoilTypeEnum;
+    // C++ wrapper type for IfcMassMeasure
+    typedef REAL IfcMassMeasure;
+    // C++ wrapper type for IfcStructuralCurveTypeEnum
+    typedef ENUMERATION IfcStructuralCurveTypeEnum;
+    // C++ wrapper type for IfcPermeableCoveringOperationEnum
+    typedef ENUMERATION IfcPermeableCoveringOperationEnum;
+    // C++ wrapper type for IfcMagneticFluxDensityMeasure
+    typedef REAL IfcMagneticFluxDensityMeasure;
+    // C++ wrapper type for IfcMoistureDiffusivityMeasure
+    typedef REAL IfcMoistureDiffusivityMeasure;
+
+
+	// ******************************************************************************
+	// IFC Entities
+	// ******************************************************************************
+
+	struct IfcRoot;
+	struct IfcObjectDefinition;
+	struct IfcTypeObject;
+	struct IfcTypeProduct;
+	struct IfcElementType;
+	struct IfcFurnishingElementType;
+	struct IfcFurnitureType;
+	struct IfcObject;
+	struct IfcProduct;
+	struct IfcGrid;
+	struct IfcRepresentationItem;
+	struct IfcGeometricRepresentationItem;
+	struct IfcOneDirectionRepeatFactor;
+	struct IfcTwoDirectionRepeatFactor;
+	struct IfcElement;
+	struct IfcElementComponent;
+	typedef NotImplemented IfcLocalTime; // (not currently used by Assimp)
+	struct IfcSpatialStructureElementType;
+	struct IfcControl;
+	struct IfcActionRequest;
+	typedef NotImplemented IfcTextureVertex; // (not currently used by Assimp)
+	typedef NotImplemented IfcPropertyDefinition; // (not currently used by Assimp)
+	typedef NotImplemented IfcPropertySetDefinition; // (not currently used by Assimp)
+	typedef NotImplemented IfcFluidFlowProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcDocumentInformation; // (not currently used by Assimp)
+	typedef NotImplemented IfcCalendarDate; // (not currently used by Assimp)
+	struct IfcDistributionElementType;
+	struct IfcDistributionFlowElementType;
+	struct IfcEnergyConversionDeviceType;
+	struct IfcCooledBeamType;
+	struct IfcCsgPrimitive3D;
+	struct IfcRectangularPyramid;
+	typedef NotImplemented IfcStructuralLoad; // (not currently used by Assimp)
+	typedef NotImplemented IfcStructuralLoadStatic; // (not currently used by Assimp)
+	typedef NotImplemented IfcStructuralLoadLinearForce; // (not currently used by Assimp)
+	struct IfcSurface;
+	struct IfcBoundedSurface;
+	struct IfcRectangularTrimmedSurface;
+	typedef NotImplemented IfcPhysicalQuantity; // (not currently used by Assimp)
+	typedef NotImplemented IfcPhysicalSimpleQuantity; // (not currently used by Assimp)
+	typedef NotImplemented IfcQuantityVolume; // (not currently used by Assimp)
+	typedef NotImplemented IfcQuantityArea; // (not currently used by Assimp)
+	struct IfcGroup;
+	struct IfcRelationship;
+	typedef NotImplemented IfcRelAssigns; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssignsToActor; // (not currently used by Assimp)
+	struct IfcHalfSpaceSolid;
+	struct IfcPolygonalBoundedHalfSpace;
+	typedef NotImplemented IfcEnergyProperties; // (not currently used by Assimp)
+	struct IfcAirToAirHeatRecoveryType;
+	struct IfcFlowFittingType;
+	struct IfcPipeFittingType;
+	struct IfcRepresentation;
+	struct IfcStyleModel;
+	struct IfcStyledRepresentation;
+	typedef NotImplemented IfcRelAssignsToControl; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssignsToProjectOrder; // (not currently used by Assimp)
+	typedef NotImplemented IfcDimensionalExponents; // (not currently used by Assimp)
+	struct IfcBooleanResult;
+	typedef NotImplemented IfcSoundProperties; // (not currently used by Assimp)
+	struct IfcFeatureElement;
+	struct IfcFeatureElementSubtraction;
+	struct IfcOpeningElement;
+	struct IfcConditionCriterion;
+	struct IfcFlowTerminalType;
+	struct IfcFlowControllerType;
+	struct IfcSwitchingDeviceType;
+	struct IfcSystem;
+	struct IfcElectricalCircuit;
+	typedef NotImplemented IfcActorRole; // (not currently used by Assimp)
+	typedef NotImplemented IfcDateAndTime; // (not currently used by Assimp)
+	typedef NotImplemented IfcDraughtingCalloutRelationship; // (not currently used by Assimp)
+	typedef NotImplemented IfcDimensionCalloutRelationship; // (not currently used by Assimp)
+	typedef NotImplemented IfcDerivedUnitElement; // (not currently used by Assimp)
+	typedef NotImplemented IfcExternalReference; // (not currently used by Assimp)
+	typedef NotImplemented IfcClassificationReference; // (not currently used by Assimp)
+	struct IfcUnitaryEquipmentType;
+	typedef NotImplemented IfcProperty; // (not currently used by Assimp)
+	struct IfcPort;
+	typedef NotImplemented IfcAddress; // (not currently used by Assimp)
+	struct IfcPlacement;
+	typedef NotImplemented IfcPreDefinedItem; // (not currently used by Assimp)
+	typedef NotImplemented IfcPreDefinedColour; // (not currently used by Assimp)
+	typedef NotImplemented IfcDraughtingPreDefinedColour; // (not currently used by Assimp)
+	struct IfcProfileDef;
+	struct IfcArbitraryClosedProfileDef;
+	struct IfcCurve;
+	struct IfcConic;
+	struct IfcCircle;
+	typedef NotImplemented IfcAppliedValue; // (not currently used by Assimp)
+	typedef NotImplemented IfcEnvironmentalImpactValue; // (not currently used by Assimp)
+	typedef NotImplemented IfcSimpleProperty; // (not currently used by Assimp)
+	typedef NotImplemented IfcPropertySingleValue; // (not currently used by Assimp)
+	struct IfcElementarySurface;
+	struct IfcPlane;
+	typedef NotImplemented IfcPropertyBoundedValue; // (not currently used by Assimp)
+	struct IfcCostSchedule;
+	typedef NotImplemented IfcMonetaryUnit; // (not currently used by Assimp)
+	typedef NotImplemented IfcConnectionGeometry; // (not currently used by Assimp)
+	typedef NotImplemented IfcConnectionCurveGeometry; // (not currently used by Assimp)
+	struct IfcRightCircularCone;
+	struct IfcElementAssembly;
+	struct IfcBuildingElement;
+	struct IfcMember;
+	typedef NotImplemented IfcPropertyDependencyRelationship; // (not currently used by Assimp)
+	struct IfcBuildingElementProxy;
+	struct IfcStructuralActivity;
+	struct IfcStructuralAction;
+	struct IfcStructuralPlanarAction;
+	struct IfcTopologicalRepresentationItem;
+	struct IfcConnectedFaceSet;
+	struct IfcSweptSurface;
+	struct IfcSurfaceOfLinearExtrusion;
+	struct IfcArbitraryProfileDefWithVoids;
+	struct IfcProcess;
+	struct IfcProcedure;
+	typedef NotImplemented IfcCurveStyleFontPattern; // (not currently used by Assimp)
+	struct IfcVector;
+	struct IfcFaceBound;
+	struct IfcFaceOuterBound;
+	struct IfcFeatureElementAddition;
+	struct IfcNamedUnit;
+	typedef NotImplemented IfcConversionBasedUnit; // (not currently used by Assimp)
+	typedef NotImplemented IfcStructuralLoadSingleForce; // (not currently used by Assimp)
+	struct IfcHeatExchangerType;
+	struct IfcPresentationStyleAssignment;
+	struct IfcFlowTreatmentDeviceType;
+	struct IfcFilterType;
+	struct IfcResource;
+	struct IfcEvaporativeCoolerType;
+	typedef NotImplemented IfcTextureCoordinate; // (not currently used by Assimp)
+	typedef NotImplemented IfcTextureCoordinateGenerator; // (not currently used by Assimp)
+	struct IfcOffsetCurve2D;
+	struct IfcEdge;
+	struct IfcSubedge;
+	struct IfcProxy;
+	struct IfcLine;
+	struct IfcColumn;
+	typedef NotImplemented IfcClassificationNotationFacet; // (not currently used by Assimp)
+	struct IfcObjectPlacement;
+	struct IfcGridPlacement;
+	struct IfcDistributionControlElementType;
+	typedef NotImplemented IfcStructuralLoadSingleForceWarping; // (not currently used by Assimp)
+	typedef NotImplemented IfcExternallyDefinedTextFont; // (not currently used by Assimp)
+	struct IfcRelConnects;
+	typedef NotImplemented IfcRelConnectsElements; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelConnectsWithRealizingElements; // (not currently used by Assimp)
+	typedef NotImplemented IfcConstraintClassificationRelationship; // (not currently used by Assimp)
+	struct IfcAnnotation;
+	struct IfcPlate;
+	struct IfcSolidModel;
+	struct IfcManifoldSolidBrep;
+	typedef NotImplemented IfcPreDefinedCurveFont; // (not currently used by Assimp)
+	typedef NotImplemented IfcBoundaryCondition; // (not currently used by Assimp)
+	typedef NotImplemented IfcBoundaryFaceCondition; // (not currently used by Assimp)
+	struct IfcFlowStorageDeviceType;
+	struct IfcStructuralItem;
+	struct IfcStructuralMember;
+	struct IfcStructuralCurveMember;
+	struct IfcStructuralConnection;
+	struct IfcStructuralSurfaceConnection;
+	struct IfcCoilType;
+	struct IfcDuctFittingType;
+	struct IfcStyledItem;
+	struct IfcAnnotationOccurrence;
+	struct IfcAnnotationCurveOccurrence;
+	struct IfcDimensionCurve;
+	struct IfcBoundedCurve;
+	struct IfcAxis1Placement;
+	typedef NotImplemented IfcLightIntensityDistribution; // (not currently used by Assimp)
+	typedef NotImplemented IfcPreDefinedSymbol; // (not currently used by Assimp)
+	struct IfcStructuralPointAction;
+	struct IfcSpatialStructureElement;
+	struct IfcSpace;
+	typedef NotImplemented IfcContextDependentUnit; // (not currently used by Assimp)
+	typedef NotImplemented IfcVirtualGridIntersection; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssociates; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssociatesClassification; // (not currently used by Assimp)
+	struct IfcCoolingTowerType;
+	typedef NotImplemented IfcMaterialProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcGeneralMaterialProperties; // (not currently used by Assimp)
+	struct IfcFacetedBrepWithVoids;
+	typedef NotImplemented IfcProfileProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcGeneralProfileProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcStructuralProfileProperties; // (not currently used by Assimp)
+	struct IfcValveType;
+	struct IfcSystemFurnitureElementType;
+	struct IfcDiscreteAccessory;
+	typedef NotImplemented IfcPerson; // (not currently used by Assimp)
+	struct IfcBuildingElementType;
+	struct IfcRailingType;
+	struct IfcGasTerminalType;
+	typedef NotImplemented IfcTimeSeries; // (not currently used by Assimp)
+	typedef NotImplemented IfcIrregularTimeSeries; // (not currently used by Assimp)
+	struct IfcSpaceProgram;
+	struct IfcCovering;
+	typedef NotImplemented IfcShapeAspect; // (not currently used by Assimp)
+	struct IfcPresentationStyle;
+	typedef NotImplemented IfcClassificationItemRelationship; // (not currently used by Assimp)
+	struct IfcElectricHeaterType;
+	struct IfcBuildingStorey;
+	struct IfcVertex;
+	struct IfcVertexPoint;
+	struct IfcFlowInstrumentType;
+	struct IfcParameterizedProfileDef;
+	struct IfcUShapeProfileDef;
+	struct IfcRamp;
+	typedef NotImplemented IfcFillAreaStyle; // (not currently used by Assimp)
+	struct IfcCompositeCurve;
+	typedef NotImplemented IfcRelServicesBuildings; // (not currently used by Assimp)
+	struct IfcStructuralCurveMemberVarying;
+	typedef NotImplemented IfcRelReferencedInSpatialStructure; // (not currently used by Assimp)
+	struct IfcRampFlightType;
+	struct IfcDraughtingCallout;
+	struct IfcDimensionCurveDirectedCallout;
+	struct IfcRadiusDimension;
+	struct IfcEdgeFeature;
+	struct IfcSweptAreaSolid;
+	struct IfcExtrudedAreaSolid;
+	typedef NotImplemented IfcQuantityCount; // (not currently used by Assimp)
+	struct IfcAnnotationTextOccurrence;
+	typedef NotImplemented IfcReferencesValueDocument; // (not currently used by Assimp)
+	struct IfcStair;
+	typedef NotImplemented IfcSymbolStyle; // (not currently used by Assimp)
+	struct IfcFillAreaStyleTileSymbolWithStyle;
+	struct IfcAnnotationSymbolOccurrence;
+	struct IfcTerminatorSymbol;
+	struct IfcDimensionCurveTerminator;
+	struct IfcRectangleProfileDef;
+	struct IfcRectangleHollowProfileDef;
+	typedef NotImplemented IfcRelAssociatesLibrary; // (not currently used by Assimp)
+	struct IfcLocalPlacement;
+	typedef NotImplemented IfcOpticalMaterialProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcServiceLifeFactor; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssignsTasks; // (not currently used by Assimp)
+	struct IfcTask;
+	struct IfcAnnotationFillAreaOccurrence;
+	struct IfcFace;
+	struct IfcFlowSegmentType;
+	struct IfcDuctSegmentType;
+	typedef NotImplemented IfcPropertyEnumeration; // (not currently used by Assimp)
+	struct IfcConstructionResource;
+	struct IfcConstructionEquipmentResource;
+	struct IfcSanitaryTerminalType;
+	typedef NotImplemented IfcPreDefinedDimensionSymbol; // (not currently used by Assimp)
+	typedef NotImplemented IfcOrganization; // (not currently used by Assimp)
+	struct IfcCircleProfileDef;
+	struct IfcStructuralReaction;
+	struct IfcStructuralPointReaction;
+	struct IfcRailing;
+	struct IfcTextLiteral;
+	struct IfcCartesianTransformationOperator;
+	typedef NotImplemented IfcCostValue; // (not currently used by Assimp)
+	typedef NotImplemented IfcTextStyle; // (not currently used by Assimp)
+	struct IfcLinearDimension;
+	struct IfcDamperType;
+	struct IfcSIUnit;
+	typedef NotImplemented IfcSurfaceStyleLighting; // (not currently used by Assimp)
+	typedef NotImplemented IfcMeasureWithUnit; // (not currently used by Assimp)
+	typedef NotImplemented IfcMaterialLayerSet; // (not currently used by Assimp)
+	struct IfcDistributionElement;
+	struct IfcDistributionControlElement;
+	struct IfcTransformerType;
+	struct IfcLaborResource;
+	typedef NotImplemented IfcDerivedProfileDef; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelConnectsStructuralMember; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelConnectsWithEccentricity; // (not currently used by Assimp)
+	struct IfcFurnitureStandard;
+	struct IfcStairFlightType;
+	struct IfcWorkControl;
+	struct IfcWorkPlan;
+	typedef NotImplemented IfcRelDefines; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelDefinesByProperties; // (not currently used by Assimp)
+	struct IfcCondition;
+	typedef NotImplemented IfcGridAxis; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelVoidsElement; // (not currently used by Assimp)
+	struct IfcWindow;
+	typedef NotImplemented IfcRelFlowControlElements; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelConnectsPortToElement; // (not currently used by Assimp)
+	struct IfcProtectiveDeviceType;
+	struct IfcJunctionBoxType;
+	struct IfcStructuralAnalysisModel;
+	struct IfcAxis2Placement2D;
+	struct IfcSpaceType;
+	struct IfcEllipseProfileDef;
+	struct IfcDistributionFlowElement;
+	struct IfcFlowMovingDevice;
+	struct IfcSurfaceStyleWithTextures;
+	struct IfcGeometricSet;
+	typedef NotImplemented IfcMechanicalMaterialProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcMechanicalConcreteMaterialProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcRibPlateProfileProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcDocumentInformationRelationship; // (not currently used by Assimp)
+	struct IfcProjectOrder;
+	struct IfcBSplineCurve;
+	struct IfcBezierCurve;
+	struct IfcStructuralPointConnection;
+	struct IfcFlowController;
+	struct IfcElectricDistributionPoint;
+	struct IfcSite;
+	struct IfcOffsetCurve3D;
+	typedef NotImplemented IfcPropertySet; // (not currently used by Assimp)
+	typedef NotImplemented IfcConnectionSurfaceGeometry; // (not currently used by Assimp)
+	struct IfcVirtualElement;
+	struct IfcConstructionProductResource;
+	typedef NotImplemented IfcWaterProperties; // (not currently used by Assimp)
+	struct IfcSurfaceCurveSweptAreaSolid;
+	typedef NotImplemented IfcPermeableCoveringProperties; // (not currently used by Assimp)
+	struct IfcCartesianTransformationOperator3D;
+	struct IfcCartesianTransformationOperator3DnonUniform;
+	struct IfcCrewResource;
+	struct IfcStructuralSurfaceMember;
+	struct Ifc2DCompositeCurve;
+	struct IfcRepresentationContext;
+	struct IfcGeometricRepresentationContext;
+	struct IfcFlowTreatmentDevice;
+	typedef NotImplemented IfcTextStyleForDefinedFont; // (not currently used by Assimp)
+	struct IfcRightCircularCylinder;
+	struct IfcWasteTerminalType;
+	typedef NotImplemented IfcSpaceThermalLoadProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcConstraintRelationship; // (not currently used by Assimp)
+	struct IfcBuildingElementComponent;
+	struct IfcBuildingElementPart;
+	struct IfcWall;
+	struct IfcWallStandardCase;
+	typedef NotImplemented IfcApprovalActorRelationship; // (not currently used by Assimp)
+	struct IfcPath;
+	struct IfcDefinedSymbol;
+	struct IfcStructuralSurfaceMemberVarying;
+	struct IfcPoint;
+	struct IfcSurfaceOfRevolution;
+	struct IfcFlowTerminal;
+	struct IfcFurnishingElement;
+	typedef NotImplemented IfcCurveStyleFont; // (not currently used by Assimp)
+	struct IfcSurfaceStyleShading;
+	struct IfcSurfaceStyleRendering;
+	typedef NotImplemented IfcCoordinatedUniversalTimeOffset; // (not currently used by Assimp)
+	typedef NotImplemented IfcStructuralLoadSingleDisplacement; // (not currently used by Assimp)
+	struct IfcCircleHollowProfileDef;
+	struct IfcFlowMovingDeviceType;
+	struct IfcFanType;
+	struct IfcStructuralPlanarActionVarying;
+	struct IfcProductRepresentation;
+	typedef NotImplemented IfcRelDefinesByType; // (not currently used by Assimp)
+	typedef NotImplemented IfcPreDefinedTextFont; // (not currently used by Assimp)
+	typedef NotImplemented IfcTextStyleFontModel; // (not currently used by Assimp)
+	struct IfcStackTerminalType;
+	typedef NotImplemented IfcApprovalPropertyRelationship; // (not currently used by Assimp)
+	typedef NotImplemented IfcExternallyDefinedSymbol; // (not currently used by Assimp)
+	struct IfcReinforcingElement;
+	struct IfcReinforcingMesh;
+	struct IfcOrderAction;
+	typedef NotImplemented IfcRelCoversBldgElements; // (not currently used by Assimp)
+	struct IfcLightSource;
+	struct IfcLightSourceDirectional;
+	struct IfcLoop;
+	struct IfcVertexLoop;
+	struct IfcChamferEdgeFeature;
+	typedef NotImplemented IfcWindowPanelProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcClassification; // (not currently used by Assimp)
+	struct IfcElementComponentType;
+	struct IfcFastenerType;
+	struct IfcMechanicalFastenerType;
+	struct IfcScheduleTimeControl;
+	struct IfcSurfaceStyle;
+	typedef NotImplemented IfcReinforcementBarProperties; // (not currently used by Assimp)
+	struct IfcOpenShell;
+	typedef NotImplemented IfcLibraryReference; // (not currently used by Assimp)
+	struct IfcSubContractResource;
+	typedef NotImplemented IfcTimeSeriesReferenceRelationship; // (not currently used by Assimp)
+	struct IfcSweptDiskSolid;
+	typedef NotImplemented IfcCompositeProfileDef; // (not currently used by Assimp)
+	typedef NotImplemented IfcElectricalBaseProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcPreDefinedPointMarkerSymbol; // (not currently used by Assimp)
+	struct IfcTankType;
+	typedef NotImplemented IfcBoundaryNodeCondition; // (not currently used by Assimp)
+	typedef NotImplemented IfcBoundaryNodeConditionWarping; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssignsToGroup; // (not currently used by Assimp)
+	typedef NotImplemented IfcPresentationLayerAssignment; // (not currently used by Assimp)
+	struct IfcSphere;
+	struct IfcPolyLoop;
+	struct IfcCableCarrierFittingType;
+	struct IfcHumidifierType;
+	typedef NotImplemented IfcPropertyListValue; // (not currently used by Assimp)
+	typedef NotImplemented IfcPropertyConstraintRelationship; // (not currently used by Assimp)
+	struct IfcPerformanceHistory;
+	struct IfcShapeModel;
+	struct IfcTopologyRepresentation;
+	struct IfcBuilding;
+	struct IfcRoundedRectangleProfileDef;
+	struct IfcStairFlight;
+	typedef NotImplemented IfcSurfaceStyleRefraction; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelInteractionRequirements; // (not currently used by Assimp)
+	typedef NotImplemented IfcConstraint; // (not currently used by Assimp)
+	typedef NotImplemented IfcObjective; // (not currently used by Assimp)
+	typedef NotImplemented IfcConnectionPortGeometry; // (not currently used by Assimp)
+	struct IfcDistributionChamberElement;
+	typedef NotImplemented IfcPersonAndOrganization; // (not currently used by Assimp)
+	struct IfcShapeRepresentation;
+	struct IfcRampFlight;
+	struct IfcBeamType;
+	struct IfcRelDecomposes;
+	struct IfcRoof;
+	struct IfcFooting;
+	typedef NotImplemented IfcRelCoversSpaces; // (not currently used by Assimp)
+	struct IfcLightSourceAmbient;
+	typedef NotImplemented IfcTimeSeriesValue; // (not currently used by Assimp)
+	struct IfcWindowStyle;
+	typedef NotImplemented IfcPropertyReferenceValue; // (not currently used by Assimp)
+	typedef NotImplemented IfcApproval; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelConnectsStructuralElement; // (not currently used by Assimp)
+	struct IfcBuildingElementProxyType;
+	typedef NotImplemented IfcRelAssociatesProfileProperties; // (not currently used by Assimp)
+	struct IfcAxis2Placement3D;
+	typedef NotImplemented IfcRelConnectsPorts; // (not currently used by Assimp)
+	struct IfcEdgeCurve;
+	struct IfcClosedShell;
+	struct IfcTendonAnchor;
+	struct IfcCondenserType;
+	typedef NotImplemented IfcQuantityTime; // (not currently used by Assimp)
+	typedef NotImplemented IfcSurfaceTexture; // (not currently used by Assimp)
+	typedef NotImplemented IfcPixelTexture; // (not currently used by Assimp)
+	typedef NotImplemented IfcStructuralConnectionCondition; // (not currently used by Assimp)
+	typedef NotImplemented IfcFailureConnectionCondition; // (not currently used by Assimp)
+	typedef NotImplemented IfcDocumentReference; // (not currently used by Assimp)
+	typedef NotImplemented IfcMechanicalSteelMaterialProperties; // (not currently used by Assimp)
+	struct IfcPipeSegmentType;
+	struct IfcPointOnSurface;
+	typedef NotImplemented IfcTable; // (not currently used by Assimp)
+	typedef NotImplemented IfcLightDistributionData; // (not currently used by Assimp)
+	typedef NotImplemented IfcPropertyTableValue; // (not currently used by Assimp)
+	typedef NotImplemented IfcPresentationLayerWithStyle; // (not currently used by Assimp)
+	struct IfcAsset;
+	struct IfcLightSourcePositional;
+	typedef NotImplemented IfcLibraryInformation; // (not currently used by Assimp)
+	typedef NotImplemented IfcTextStyleTextModel; // (not currently used by Assimp)
+	struct IfcProjectionCurve;
+	struct IfcFillAreaStyleTiles;
+	typedef NotImplemented IfcRelFillsElement; // (not currently used by Assimp)
+	struct IfcElectricMotorType;
+	struct IfcTendon;
+	struct IfcDistributionChamberElementType;
+	struct IfcMemberType;
+	struct IfcStructuralLinearAction;
+	struct IfcStructuralLinearActionVarying;
+	struct IfcProductDefinitionShape;
+	struct IfcFastener;
+	struct IfcMechanicalFastener;
+	typedef NotImplemented IfcFuelProperties; // (not currently used by Assimp)
+	struct IfcEvaporatorType;
+	typedef NotImplemented IfcMaterialLayerSetUsage; // (not currently used by Assimp)
+	struct IfcDiscreteAccessoryType;
+	struct IfcStructuralCurveConnection;
+	struct IfcProjectionElement;
+	typedef NotImplemented IfcImageTexture; // (not currently used by Assimp)
+	struct IfcCoveringType;
+	typedef NotImplemented IfcRelAssociatesAppliedValue; // (not currently used by Assimp)
+	struct IfcPumpType;
+	struct IfcPile;
+	struct IfcUnitAssignment;
+	struct IfcBoundingBox;
+	struct IfcShellBasedSurfaceModel;
+	struct IfcFacetedBrep;
+	struct IfcTextLiteralWithExtent;
+	typedef NotImplemented IfcApplication; // (not currently used by Assimp)
+	typedef NotImplemented IfcExtendedMaterialProperties; // (not currently used by Assimp)
+	struct IfcElectricApplianceType;
+	typedef NotImplemented IfcRelOccupiesSpaces; // (not currently used by Assimp)
+	struct IfcTrapeziumProfileDef;
+	typedef NotImplemented IfcQuantityWeight; // (not currently used by Assimp)
+	struct IfcRelContainedInSpatialStructure;
+	struct IfcEdgeLoop;
+	struct IfcProject;
+	struct IfcCartesianPoint;
+	typedef NotImplemented IfcMaterial; // (not currently used by Assimp)
+	struct IfcCurveBoundedPlane;
+	struct IfcWallType;
+	struct IfcFillAreaStyleHatching;
+	struct IfcEquipmentStandard;
+	typedef NotImplemented IfcHygroscopicMaterialProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcDoorPanelProperties; // (not currently used by Assimp)
+	struct IfcDiameterDimension;
+	struct IfcStructuralLoadGroup;
+	typedef NotImplemented IfcTelecomAddress; // (not currently used by Assimp)
+	struct IfcConstructionMaterialResource;
+	typedef NotImplemented IfcBlobTexture; // (not currently used by Assimp)
+	typedef NotImplemented IfcIrregularTimeSeriesValue; // (not currently used by Assimp)
+	struct IfcRelAggregates;
+	struct IfcBoilerType;
+	typedef NotImplemented IfcRelProjectsElement; // (not currently used by Assimp)
+	struct IfcColourSpecification;
+	struct IfcColourRgb;
+	typedef NotImplemented IfcRelConnectsStructuralActivity; // (not currently used by Assimp)
+	struct IfcDoorStyle;
+	typedef NotImplemented IfcStructuralLoadSingleDisplacementDistortion; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssignsToProcess; // (not currently used by Assimp)
+	struct IfcDuctSilencerType;
+	struct IfcLightSourceGoniometric;
+	struct IfcActuatorType;
+	struct IfcSensorType;
+	struct IfcAirTerminalBoxType;
+	struct IfcAnnotationSurfaceOccurrence;
+	struct IfcZShapeProfileDef;
+	typedef NotImplemented IfcClassificationNotation; // (not currently used by Assimp)
+	struct IfcRationalBezierCurve;
+	struct IfcCartesianTransformationOperator2D;
+	struct IfcCartesianTransformationOperator2DnonUniform;
+	struct IfcMove;
+	typedef NotImplemented IfcBoundaryEdgeCondition; // (not currently used by Assimp)
+	typedef NotImplemented IfcDoorLiningProperties; // (not currently used by Assimp)
+	struct IfcCableCarrierSegmentType;
+	typedef NotImplemented IfcPostalAddress; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelConnectsPathElements; // (not currently used by Assimp)
+	struct IfcElectricalElement;
+	typedef NotImplemented IfcOwnerHistory; // (not currently used by Assimp)
+	typedef NotImplemented IfcStructuralLoadTemperature; // (not currently used by Assimp)
+	typedef NotImplemented IfcTextStyleWithBoxCharacteristics; // (not currently used by Assimp)
+	struct IfcChillerType;
+	typedef NotImplemented IfcRelSchedulesCostItems; // (not currently used by Assimp)
+	struct IfcReinforcingBar;
+	typedef NotImplemented IfcCurrencyRelationship; // (not currently used by Assimp)
+	typedef NotImplemented IfcSoundValue; // (not currently used by Assimp)
+	struct IfcCShapeProfileDef;
+	struct IfcPermit;
+	struct IfcSlabType;
+	typedef NotImplemented IfcSlippageConnectionCondition; // (not currently used by Assimp)
+	struct IfcLampType;
+	struct IfcPlanarExtent;
+	struct IfcAlarmType;
+	typedef NotImplemented IfcDocumentElectronicFormat; // (not currently used by Assimp)
+	struct IfcElectricFlowStorageDeviceType;
+	struct IfcEquipmentElement;
+	struct IfcLightFixtureType;
+	typedef NotImplemented IfcMetric; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelNests; // (not currently used by Assimp)
+	struct IfcCurtainWall;
+	typedef NotImplemented IfcRelAssociatesDocument; // (not currently used by Assimp)
+	typedef NotImplemented IfcComplexProperty; // (not currently used by Assimp)
+	typedef NotImplemented IfcVertexBasedTextureMap; // (not currently used by Assimp)
+	struct IfcSlab;
+	struct IfcCurtainWallType;
+	struct IfcOutletType;
+	struct IfcCompressorType;
+	struct IfcCraneRailAShapeProfileDef;
+	struct IfcFlowSegment;
+	struct IfcSectionedSpine;
+	typedef NotImplemented IfcTableRow; // (not currently used by Assimp)
+	typedef NotImplemented IfcDraughtingPreDefinedTextFont; // (not currently used by Assimp)
+	struct IfcElectricTimeControlType;
+	struct IfcFaceSurface;
+	typedef NotImplemented IfcMaterialList; // (not currently used by Assimp)
+	struct IfcMotorConnectionType;
+	struct IfcFlowFitting;
+	struct IfcPointOnCurve;
+	struct IfcTransportElementType;
+	typedef NotImplemented IfcRegularTimeSeries; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssociatesConstraint; // (not currently used by Assimp)
+	typedef NotImplemented IfcPropertyEnumeratedValue; // (not currently used by Assimp)
+	typedef NotImplemented IfcStructuralSteelProfileProperties; // (not currently used by Assimp)
+	struct IfcCableSegmentType;
+	typedef NotImplemented IfcExternallyDefinedHatchStyle; // (not currently used by Assimp)
+	struct IfcAnnotationSurface;
+	struct IfcCompositeCurveSegment;
+	struct IfcServiceLife;
+	struct IfcPlateType;
+	typedef NotImplemented IfcCurveStyle; // (not currently used by Assimp)
+	typedef NotImplemented IfcSectionProperties; // (not currently used by Assimp)
+	struct IfcVibrationIsolatorType;
+	typedef NotImplemented IfcTextureMap; // (not currently used by Assimp)
+	struct IfcTrimmedCurve;
+	struct IfcMappedItem;
+	typedef NotImplemented IfcMaterialLayer; // (not currently used by Assimp)
+	struct IfcDirection;
+	struct IfcBlock;
+	struct IfcProjectOrderRecord;
+	struct IfcFlowMeterType;
+	struct IfcControllerType;
+	struct IfcBeam;
+	struct IfcArbitraryOpenProfileDef;
+	struct IfcCenterLineProfileDef;
+	typedef NotImplemented IfcStructuralLoadPlanarForce; // (not currently used by Assimp)
+	struct IfcTimeSeriesSchedule;
+	struct IfcRoundedEdgeFeature;
+	typedef NotImplemented IfcWindowLiningProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelOverridesProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcApprovalRelationship; // (not currently used by Assimp)
+	struct IfcIShapeProfileDef;
+	struct IfcSpaceHeaterType;
+	typedef NotImplemented IfcExternallyDefinedSurfaceStyle; // (not currently used by Assimp)
+	typedef NotImplemented IfcDerivedUnit; // (not currently used by Assimp)
+	struct IfcFlowStorageDevice;
+	typedef NotImplemented IfcMaterialClassificationRelationship; // (not currently used by Assimp)
+	typedef NotImplemented IfcClassificationItem; // (not currently used by Assimp)
+	struct IfcRevolvedAreaSolid;
+	typedef NotImplemented IfcConnectionPointGeometry; // (not currently used by Assimp)
+	struct IfcDoor;
+	struct IfcEllipse;
+	struct IfcTubeBundleType;
+	struct IfcAngularDimension;
+	typedef NotImplemented IfcThermalMaterialProperties; // (not currently used by Assimp)
+	struct IfcFaceBasedSurfaceModel;
+	struct IfcCraneRailFShapeProfileDef;
+	struct IfcColumnType;
+	struct IfcTShapeProfileDef;
+	struct IfcEnergyConversionDevice;
+	typedef NotImplemented IfcConnectionPointEccentricity; // (not currently used by Assimp)
+	typedef NotImplemented IfcReinforcementDefinitionProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcCurveStyleFontAndScaling; // (not currently used by Assimp)
+	struct IfcWorkSchedule;
+	typedef NotImplemented IfcOrganizationRelationship; // (not currently used by Assimp)
+	struct IfcZone;
+	struct IfcTransportElement;
+	typedef NotImplemented IfcDraughtingPreDefinedCurveFont; // (not currently used by Assimp)
+	struct IfcGeometricRepresentationSubContext;
+	struct IfcLShapeProfileDef;
+	struct IfcGeometricCurveSet;
+	struct IfcActor;
+	struct IfcOccupant;
+	typedef NotImplemented IfcPhysicalComplexQuantity; // (not currently used by Assimp)
+	struct IfcBooleanClippingResult;
+	typedef NotImplemented IfcPreDefinedTerminatorSymbol; // (not currently used by Assimp)
+	struct IfcAnnotationFillArea;
+	typedef NotImplemented IfcConstraintAggregationRelationship; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssociatesApproval; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssociatesMaterial; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelAssignsToProduct; // (not currently used by Assimp)
+	typedef NotImplemented IfcAppliedValueRelationship; // (not currently used by Assimp)
+	struct IfcLightSourceSpot;
+	struct IfcFireSuppressionTerminalType;
+	typedef NotImplemented IfcElementQuantity; // (not currently used by Assimp)
+	typedef NotImplemented IfcDimensionPair; // (not currently used by Assimp)
+	struct IfcElectricGeneratorType;
+	typedef NotImplemented IfcRelSequence; // (not currently used by Assimp)
+	struct IfcInventory;
+	struct IfcPolyline;
+	struct IfcBoxedHalfSpace;
+	struct IfcAirTerminalType;
+	typedef NotImplemented IfcSectionReinforcementProperties; // (not currently used by Assimp)
+	struct IfcDistributionPort;
+	struct IfcCostItem;
+	struct IfcStructuredDimensionCallout;
+	struct IfcStructuralResultGroup;
+	typedef NotImplemented IfcRelSpaceBoundary; // (not currently used by Assimp)
+	struct IfcOrientedEdge;
+	typedef NotImplemented IfcRelAssignsToResource; // (not currently used by Assimp)
+	struct IfcCsgSolid;
+	typedef NotImplemented IfcProductsOfCombustionProperties; // (not currently used by Assimp)
+	typedef NotImplemented IfcRelaxation; // (not currently used by Assimp)
+	struct IfcPlanarBox;
+	typedef NotImplemented IfcQuantityLength; // (not currently used by Assimp)
+	struct IfcMaterialDefinitionRepresentation;
+	struct IfcAsymmetricIShapeProfileDef;
+	struct IfcRepresentationMap;
+
+
+
+    // C++ wrapper for IfcRoot
+    struct IfcRoot :  ObjectHelper<IfcRoot,4> {
+		IfcGloballyUniqueId::Out GlobalId;
+		Lazy< NotImplemented > OwnerHistory;
+		Maybe< IfcLabel::Out > Name;
+		Maybe< IfcText::Out > Description;
+    };
+
+    // C++ wrapper for IfcObjectDefinition
+    struct IfcObjectDefinition : IfcRoot, ObjectHelper<IfcObjectDefinition,0> {
+
+    };
+
+    // C++ wrapper for IfcTypeObject
+    struct IfcTypeObject : IfcObjectDefinition, ObjectHelper<IfcTypeObject,2> {
+		Maybe< IfcLabel::Out > ApplicableOccurrence;
+		Maybe< ListOf< Lazy< NotImplemented >, 1, 0 > > HasPropertySets;
+    };
+
+    // C++ wrapper for IfcTypeProduct
+    struct IfcTypeProduct : IfcTypeObject, ObjectHelper<IfcTypeProduct,2> {
+		Maybe< ListOf< Lazy< IfcRepresentationMap >, 1, 0 > > RepresentationMaps;
+		Maybe< IfcLabel::Out > Tag;
+    };
+
+    // C++ wrapper for IfcElementType
+    struct IfcElementType : IfcTypeProduct, ObjectHelper<IfcElementType,1> {
+		Maybe< IfcLabel::Out > ElementType;
+    };
+
+    // C++ wrapper for IfcFurnishingElementType
+    struct IfcFurnishingElementType : IfcElementType, ObjectHelper<IfcFurnishingElementType,0> {
+
+    };
+
+    // C++ wrapper for IfcFurnitureType
+    struct IfcFurnitureType : IfcFurnishingElementType, ObjectHelper<IfcFurnitureType,1> {
+		IfcAssemblyPlaceEnum::Out AssemblyPlace;
+    };
+
+    // C++ wrapper for IfcObject
+    struct IfcObject : IfcObjectDefinition, ObjectHelper<IfcObject,1> {
+		Maybe< IfcLabel::Out > ObjectType;
+    };
+
+    // C++ wrapper for IfcProduct
+    struct IfcProduct : IfcObject, ObjectHelper<IfcProduct,2> {
+		Maybe< Lazy< IfcObjectPlacement > > ObjectPlacement;
+		Maybe< Lazy< IfcProductRepresentation > > Representation;
+    };
+
+    // C++ wrapper for IfcGrid
+    struct IfcGrid : IfcProduct, ObjectHelper<IfcGrid,3> {
+		ListOf< Lazy< NotImplemented >, 1, 0 > UAxes;
+		ListOf< Lazy< NotImplemented >, 1, 0 > VAxes;
+		Maybe< ListOf< Lazy< NotImplemented >, 1, 0 > > WAxes;
+    };
+
+    // C++ wrapper for IfcRepresentationItem
+    struct IfcRepresentationItem :  ObjectHelper<IfcRepresentationItem,0> {
+
+    };
+
+    // C++ wrapper for IfcGeometricRepresentationItem
+    struct IfcGeometricRepresentationItem : IfcRepresentationItem, ObjectHelper<IfcGeometricRepresentationItem,0> {
+
+    };
+
+    // C++ wrapper for IfcOneDirectionRepeatFactor
+    struct IfcOneDirectionRepeatFactor : IfcGeometricRepresentationItem, ObjectHelper<IfcOneDirectionRepeatFactor,1> {
+		Lazy< IfcVector > RepeatFactor;
+    };
+
+    // C++ wrapper for IfcTwoDirectionRepeatFactor
+    struct IfcTwoDirectionRepeatFactor : IfcOneDirectionRepeatFactor, ObjectHelper<IfcTwoDirectionRepeatFactor,1> {
+		Lazy< IfcVector > SecondRepeatFactor;
+    };
+
+    // C++ wrapper for IfcElement
+    struct IfcElement : IfcProduct, ObjectHelper<IfcElement,1> {
+		Maybe< IfcIdentifier::Out > Tag;
+    };
+
+    // C++ wrapper for IfcElementComponent
+    struct IfcElementComponent : IfcElement, ObjectHelper<IfcElementComponent,0> {
+
+    };
+
+    // C++ wrapper for IfcSpatialStructureElementType
+    struct IfcSpatialStructureElementType : IfcElementType, ObjectHelper<IfcSpatialStructureElementType,0> {
+
+    };
+
+    // C++ wrapper for IfcControl
+    struct IfcControl : IfcObject, ObjectHelper<IfcControl,0> {
+
+    };
+
+    // C++ wrapper for IfcActionRequest
+    struct IfcActionRequest : IfcControl, ObjectHelper<IfcActionRequest,1> {
+		IfcIdentifier::Out RequestID;
+    };
+
+    // C++ wrapper for IfcDistributionElementType
+    struct IfcDistributionElementType : IfcElementType, ObjectHelper<IfcDistributionElementType,0> {
+
+    };
+
+    // C++ wrapper for IfcDistributionFlowElementType
+    struct IfcDistributionFlowElementType : IfcDistributionElementType, ObjectHelper<IfcDistributionFlowElementType,0> {
+
+    };
+
+    // C++ wrapper for IfcEnergyConversionDeviceType
+    struct IfcEnergyConversionDeviceType : IfcDistributionFlowElementType, ObjectHelper<IfcEnergyConversionDeviceType,0> {
+
+    };
+
+    // C++ wrapper for IfcCooledBeamType
+    struct IfcCooledBeamType : IfcEnergyConversionDeviceType, ObjectHelper<IfcCooledBeamType,1> {
+		IfcCooledBeamTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcCsgPrimitive3D
+    struct IfcCsgPrimitive3D : IfcGeometricRepresentationItem, ObjectHelper<IfcCsgPrimitive3D,1> {
+		Lazy< IfcAxis2Placement3D > Position;
+    };
+
+    // C++ wrapper for IfcRectangularPyramid
+    struct IfcRectangularPyramid : IfcCsgPrimitive3D, ObjectHelper<IfcRectangularPyramid,3> {
+		IfcPositiveLengthMeasure::Out XLength;
+		IfcPositiveLengthMeasure::Out YLength;
+		IfcPositiveLengthMeasure::Out Height;
+    };
+
+    // C++ wrapper for IfcSurface
+    struct IfcSurface : IfcGeometricRepresentationItem, ObjectHelper<IfcSurface,0> {
+
+    };
+
+    // C++ wrapper for IfcBoundedSurface
+    struct IfcBoundedSurface : IfcSurface, ObjectHelper<IfcBoundedSurface,0> {
+
+    };
+
+    // C++ wrapper for IfcRectangularTrimmedSurface
+    struct IfcRectangularTrimmedSurface : IfcBoundedSurface, ObjectHelper<IfcRectangularTrimmedSurface,7> {
+		Lazy< IfcSurface > BasisSurface;
+		IfcParameterValue::Out U1;
+		IfcParameterValue::Out V1;
+		IfcParameterValue::Out U2;
+		IfcParameterValue::Out V2;
+		BOOLEAN::Out Usense;
+		BOOLEAN::Out Vsense;
+    };
+
+    // C++ wrapper for IfcGroup
+    struct IfcGroup : IfcObject, ObjectHelper<IfcGroup,0> {
+
+    };
+
+    // C++ wrapper for IfcRelationship
+    struct IfcRelationship : IfcRoot, ObjectHelper<IfcRelationship,0> {
+
+    };
+
+    // C++ wrapper for IfcHalfSpaceSolid
+    struct IfcHalfSpaceSolid : IfcGeometricRepresentationItem, ObjectHelper<IfcHalfSpaceSolid,2> {
+		Lazy< IfcSurface > BaseSurface;
+		BOOLEAN::Out AgreementFlag;
+    };
+
+    // C++ wrapper for IfcPolygonalBoundedHalfSpace
+    struct IfcPolygonalBoundedHalfSpace : IfcHalfSpaceSolid, ObjectHelper<IfcPolygonalBoundedHalfSpace,2> {
+		Lazy< IfcAxis2Placement3D > Position;
+		Lazy< IfcBoundedCurve > PolygonalBoundary;
+    };
+
+    // C++ wrapper for IfcAirToAirHeatRecoveryType
+    struct IfcAirToAirHeatRecoveryType : IfcEnergyConversionDeviceType, ObjectHelper<IfcAirToAirHeatRecoveryType,1> {
+		IfcAirToAirHeatRecoveryTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcFlowFittingType
+    struct IfcFlowFittingType : IfcDistributionFlowElementType, ObjectHelper<IfcFlowFittingType,0> {
+
+    };
+
+    // C++ wrapper for IfcPipeFittingType
+    struct IfcPipeFittingType : IfcFlowFittingType, ObjectHelper<IfcPipeFittingType,1> {
+		IfcPipeFittingTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcRepresentation
+    struct IfcRepresentation :  ObjectHelper<IfcRepresentation,4> {
+		Lazy< IfcRepresentationContext > ContextOfItems;
+		Maybe< IfcLabel::Out > RepresentationIdentifier;
+		Maybe< IfcLabel::Out > RepresentationType;
+		ListOf< Lazy< IfcRepresentationItem >, 1, 0 > Items;
+    };
+
+    // C++ wrapper for IfcStyleModel
+    struct IfcStyleModel : IfcRepresentation, ObjectHelper<IfcStyleModel,0> {
+
+    };
+
+    // C++ wrapper for IfcStyledRepresentation
+    struct IfcStyledRepresentation : IfcStyleModel, ObjectHelper<IfcStyledRepresentation,0> {
+
+    };
+
+    // C++ wrapper for IfcBooleanResult
+    struct IfcBooleanResult : IfcGeometricRepresentationItem, ObjectHelper<IfcBooleanResult,3> {
+		IfcBooleanOperator::Out Operator;
+		IfcBooleanOperand::Out FirstOperand;
+		IfcBooleanOperand::Out SecondOperand;
+    };
+
+    // C++ wrapper for IfcFeatureElement
+    struct IfcFeatureElement : IfcElement, ObjectHelper<IfcFeatureElement,0> {
+
+    };
+
+    // C++ wrapper for IfcFeatureElementSubtraction
+    struct IfcFeatureElementSubtraction : IfcFeatureElement, ObjectHelper<IfcFeatureElementSubtraction,0> {
+
+    };
+
+    // C++ wrapper for IfcOpeningElement
+    struct IfcOpeningElement : IfcFeatureElementSubtraction, ObjectHelper<IfcOpeningElement,0> {
+
+    };
+
+    // C++ wrapper for IfcConditionCriterion
+    struct IfcConditionCriterion : IfcControl, ObjectHelper<IfcConditionCriterion,2> {
+		IfcConditionCriterionSelect::Out Criterion;
+		IfcDateTimeSelect::Out CriterionDateTime;
+    };
+
+    // C++ wrapper for IfcFlowTerminalType
+    struct IfcFlowTerminalType : IfcDistributionFlowElementType, ObjectHelper<IfcFlowTerminalType,0> {
+
+    };
+
+    // C++ wrapper for IfcFlowControllerType
+    struct IfcFlowControllerType : IfcDistributionFlowElementType, ObjectHelper<IfcFlowControllerType,0> {
+
+    };
+
+    // C++ wrapper for IfcSwitchingDeviceType
+    struct IfcSwitchingDeviceType : IfcFlowControllerType, ObjectHelper<IfcSwitchingDeviceType,1> {
+		IfcSwitchingDeviceTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcSystem
+    struct IfcSystem : IfcGroup, ObjectHelper<IfcSystem,0> {
+
+    };
+
+    // C++ wrapper for IfcElectricalCircuit
+    struct IfcElectricalCircuit : IfcSystem, ObjectHelper<IfcElectricalCircuit,0> {
+
+    };
+
+    // C++ wrapper for IfcUnitaryEquipmentType
+    struct IfcUnitaryEquipmentType : IfcEnergyConversionDeviceType, ObjectHelper<IfcUnitaryEquipmentType,1> {
+		IfcUnitaryEquipmentTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcPort
+    struct IfcPort : IfcProduct, ObjectHelper<IfcPort,0> {
+
+    };
+
+    // C++ wrapper for IfcPlacement
+    struct IfcPlacement : IfcGeometricRepresentationItem, ObjectHelper<IfcPlacement,1> {
+		Lazy< IfcCartesianPoint > Location;
+    };
+
+    // C++ wrapper for IfcProfileDef
+    struct IfcProfileDef :  ObjectHelper<IfcProfileDef,2> {
+		IfcProfileTypeEnum::Out ProfileType;
+		Maybe< IfcLabel::Out > ProfileName;
+    };
+
+    // C++ wrapper for IfcArbitraryClosedProfileDef
+    struct IfcArbitraryClosedProfileDef : IfcProfileDef, ObjectHelper<IfcArbitraryClosedProfileDef,1> {
+		Lazy< IfcCurve > OuterCurve;
+    };
+
+    // C++ wrapper for IfcCurve
+    struct IfcCurve : IfcGeometricRepresentationItem, ObjectHelper<IfcCurve,0> {
+
+    };
+
+    // C++ wrapper for IfcConic
+    struct IfcConic : IfcCurve, ObjectHelper<IfcConic,1> {
+		IfcAxis2Placement::Out Position;
+    };
+
+    // C++ wrapper for IfcCircle
+    struct IfcCircle : IfcConic, ObjectHelper<IfcCircle,1> {
+		IfcPositiveLengthMeasure::Out Radius;
+    };
+
+    // C++ wrapper for IfcElementarySurface
+    struct IfcElementarySurface : IfcSurface, ObjectHelper<IfcElementarySurface,1> {
+		Lazy< IfcAxis2Placement3D > Position;
+    };
+
+    // C++ wrapper for IfcPlane
+    struct IfcPlane : IfcElementarySurface, ObjectHelper<IfcPlane,0> {
+
+    };
+
+    // C++ wrapper for IfcCostSchedule
+    struct IfcCostSchedule : IfcControl, ObjectHelper<IfcCostSchedule,8> {
+		Maybe< IfcActorSelect::Out > SubmittedBy;
+		Maybe< IfcActorSelect::Out > PreparedBy;
+		Maybe< IfcDateTimeSelect::Out > SubmittedOn;
+		Maybe< IfcLabel::Out > Status;
+		Maybe< ListOf< IfcActorSelect, 1, 0 >::Out > TargetUsers;
+		Maybe< IfcDateTimeSelect::Out > UpdateDate;
+		IfcIdentifier::Out ID;
+		IfcCostScheduleTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcRightCircularCone
+    struct IfcRightCircularCone : IfcCsgPrimitive3D, ObjectHelper<IfcRightCircularCone,2> {
+		IfcPositiveLengthMeasure::Out Height;
+		IfcPositiveLengthMeasure::Out BottomRadius;
+    };
+
+    // C++ wrapper for IfcElementAssembly
+    struct IfcElementAssembly : IfcElement, ObjectHelper<IfcElementAssembly,2> {
+		Maybe< IfcAssemblyPlaceEnum::Out > AssemblyPlace;
+		IfcElementAssemblyTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcBuildingElement
+    struct IfcBuildingElement : IfcElement, ObjectHelper<IfcBuildingElement,0> {
+
+    };
+
+    // C++ wrapper for IfcMember
+    struct IfcMember : IfcBuildingElement, ObjectHelper<IfcMember,0> {
+
+    };
+
+    // C++ wrapper for IfcBuildingElementProxy
+    struct IfcBuildingElementProxy : IfcBuildingElement, ObjectHelper<IfcBuildingElementProxy,1> {
+		Maybe< IfcElementCompositionEnum::Out > CompositionType;
+    };
+
+    // C++ wrapper for IfcStructuralActivity
+    struct IfcStructuralActivity : IfcProduct, ObjectHelper<IfcStructuralActivity,2> {
+		Lazy< NotImplemented > AppliedLoad;
+		IfcGlobalOrLocalEnum::Out GlobalOrLocal;
+    };
+
+    // C++ wrapper for IfcStructuralAction
+    struct IfcStructuralAction : IfcStructuralActivity, ObjectHelper<IfcStructuralAction,2> {
+		BOOLEAN::Out DestabilizingLoad;
+		Maybe< Lazy< IfcStructuralReaction > > CausedBy;
+    };
+
+    // C++ wrapper for IfcStructuralPlanarAction
+    struct IfcStructuralPlanarAction : IfcStructuralAction, ObjectHelper<IfcStructuralPlanarAction,1> {
+		IfcProjectedOrTrueLengthEnum::Out ProjectedOrTrue;
+    };
+
+    // C++ wrapper for IfcTopologicalRepresentationItem
+    struct IfcTopologicalRepresentationItem : IfcRepresentationItem, ObjectHelper<IfcTopologicalRepresentationItem,0> {
+
+    };
+
+    // C++ wrapper for IfcConnectedFaceSet
+    struct IfcConnectedFaceSet : IfcTopologicalRepresentationItem, ObjectHelper<IfcConnectedFaceSet,1> {
+		ListOf< Lazy< IfcFace >, 1, 0 > CfsFaces;
+    };
+
+    // C++ wrapper for IfcSweptSurface
+    struct IfcSweptSurface : IfcSurface, ObjectHelper<IfcSweptSurface,2> {
+		Lazy< IfcProfileDef > SweptCurve;
+		Lazy< IfcAxis2Placement3D > Position;
+    };
+
+    // C++ wrapper for IfcSurfaceOfLinearExtrusion
+    struct IfcSurfaceOfLinearExtrusion : IfcSweptSurface, ObjectHelper<IfcSurfaceOfLinearExtrusion,2> {
+		Lazy< IfcDirection > ExtrudedDirection;
+		IfcLengthMeasure::Out Depth;
+    };
+
+    // C++ wrapper for IfcArbitraryProfileDefWithVoids
+    struct IfcArbitraryProfileDefWithVoids : IfcArbitraryClosedProfileDef, ObjectHelper<IfcArbitraryProfileDefWithVoids,1> {
+		ListOf< Lazy< IfcCurve >, 1, 0 > InnerCurves;
+    };
+
+    // C++ wrapper for IfcProcess
+    struct IfcProcess : IfcObject, ObjectHelper<IfcProcess,0> {
+
+    };
+
+    // C++ wrapper for IfcProcedure
+    struct IfcProcedure : IfcProcess, ObjectHelper<IfcProcedure,3> {
+		IfcIdentifier::Out ProcedureID;
+		IfcProcedureTypeEnum::Out ProcedureType;
+		Maybe< IfcLabel::Out > UserDefinedProcedureType;
+    };
+
+    // C++ wrapper for IfcVector
+    struct IfcVector : IfcGeometricRepresentationItem, ObjectHelper<IfcVector,2> {
+		Lazy< IfcDirection > Orientation;
+		IfcLengthMeasure::Out Magnitude;
+    };
+
+    // C++ wrapper for IfcFaceBound
+    struct IfcFaceBound : IfcTopologicalRepresentationItem, ObjectHelper<IfcFaceBound,2> {
+		Lazy< IfcLoop > Bound;
+		BOOLEAN::Out Orientation;
+    };
+
+    // C++ wrapper for IfcFaceOuterBound
+    struct IfcFaceOuterBound : IfcFaceBound, ObjectHelper<IfcFaceOuterBound,0> {
+
+    };
+
+    // C++ wrapper for IfcFeatureElementAddition
+    struct IfcFeatureElementAddition : IfcFeatureElement, ObjectHelper<IfcFeatureElementAddition,0> {
+
+    };
+
+    // C++ wrapper for IfcNamedUnit
+    struct IfcNamedUnit :  ObjectHelper<IfcNamedUnit,2> {
+		Lazy< NotImplemented > Dimensions;
+		IfcUnitEnum::Out UnitType;
+    };
+
+    // C++ wrapper for IfcHeatExchangerType
+    struct IfcHeatExchangerType : IfcEnergyConversionDeviceType, ObjectHelper<IfcHeatExchangerType,1> {
+		IfcHeatExchangerTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcPresentationStyleAssignment
+    struct IfcPresentationStyleAssignment :  ObjectHelper<IfcPresentationStyleAssignment,1> {
+		ListOf< IfcPresentationStyleSelect, 1, 0 >::Out Styles;
+    };
+
+    // C++ wrapper for IfcFlowTreatmentDeviceType
+    struct IfcFlowTreatmentDeviceType : IfcDistributionFlowElementType, ObjectHelper<IfcFlowTreatmentDeviceType,0> {
+
+    };
+
+    // C++ wrapper for IfcFilterType
+    struct IfcFilterType : IfcFlowTreatmentDeviceType, ObjectHelper<IfcFilterType,1> {
+		IfcFilterTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcResource
+    struct IfcResource : IfcObject, ObjectHelper<IfcResource,0> {
+
+    };
+
+    // C++ wrapper for IfcEvaporativeCoolerType
+    struct IfcEvaporativeCoolerType : IfcEnergyConversionDeviceType, ObjectHelper<IfcEvaporativeCoolerType,1> {
+		IfcEvaporativeCoolerTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcOffsetCurve2D
+    struct IfcOffsetCurve2D : IfcCurve, ObjectHelper<IfcOffsetCurve2D,3> {
+		Lazy< IfcCurve > BasisCurve;
+		IfcLengthMeasure::Out Distance;
+		LOGICAL::Out SelfIntersect;
+    };
+
+    // C++ wrapper for IfcEdge
+    struct IfcEdge : IfcTopologicalRepresentationItem, ObjectHelper<IfcEdge,2> {
+		Lazy< IfcVertex > EdgeStart;
+		Lazy< IfcVertex > EdgeEnd;
+    };
+
+    // C++ wrapper for IfcSubedge
+    struct IfcSubedge : IfcEdge, ObjectHelper<IfcSubedge,1> {
+		Lazy< IfcEdge > ParentEdge;
+    };
+
+    // C++ wrapper for IfcProxy
+    struct IfcProxy : IfcProduct, ObjectHelper<IfcProxy,2> {
+		IfcObjectTypeEnum::Out ProxyType;
+		Maybe< IfcLabel::Out > Tag;
+    };
+
+    // C++ wrapper for IfcLine
+    struct IfcLine : IfcCurve, ObjectHelper<IfcLine,2> {
+		Lazy< IfcCartesianPoint > Pnt;
+		Lazy< IfcVector > Dir;
+    };
+
+    // C++ wrapper for IfcColumn
+    struct IfcColumn : IfcBuildingElement, ObjectHelper<IfcColumn,0> {
+
+    };
+
+    // C++ wrapper for IfcObjectPlacement
+    struct IfcObjectPlacement :  ObjectHelper<IfcObjectPlacement,0> {
+
+    };
+
+    // C++ wrapper for IfcGridPlacement
+    struct IfcGridPlacement : IfcObjectPlacement, ObjectHelper<IfcGridPlacement,2> {
+		Lazy< NotImplemented > PlacementLocation;
+		Maybe< Lazy< NotImplemented > > PlacementRefDirection;
+    };
+
+    // C++ wrapper for IfcDistributionControlElementType
+    struct IfcDistributionControlElementType : IfcDistributionElementType, ObjectHelper<IfcDistributionControlElementType,0> {
+
+    };
+
+    // C++ wrapper for IfcRelConnects
+    struct IfcRelConnects : IfcRelationship, ObjectHelper<IfcRelConnects,0> {
+
+    };
+
+    // C++ wrapper for IfcAnnotation
+    struct IfcAnnotation : IfcProduct, ObjectHelper<IfcAnnotation,0> {
+
+    };
+
+    // C++ wrapper for IfcPlate
+    struct IfcPlate : IfcBuildingElement, ObjectHelper<IfcPlate,0> {
+
+    };
+
+    // C++ wrapper for IfcSolidModel
+    struct IfcSolidModel : IfcGeometricRepresentationItem, ObjectHelper<IfcSolidModel,0> {
+
+    };
+
+    // C++ wrapper for IfcManifoldSolidBrep
+    struct IfcManifoldSolidBrep : IfcSolidModel, ObjectHelper<IfcManifoldSolidBrep,1> {
+		Lazy< IfcClosedShell > Outer;
+    };
+
+    // C++ wrapper for IfcFlowStorageDeviceType
+    struct IfcFlowStorageDeviceType : IfcDistributionFlowElementType, ObjectHelper<IfcFlowStorageDeviceType,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuralItem
+    struct IfcStructuralItem : IfcProduct, ObjectHelper<IfcStructuralItem,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuralMember
+    struct IfcStructuralMember : IfcStructuralItem, ObjectHelper<IfcStructuralMember,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuralCurveMember
+    struct IfcStructuralCurveMember : IfcStructuralMember, ObjectHelper<IfcStructuralCurveMember,1> {
+		IfcStructuralCurveTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcStructuralConnection
+    struct IfcStructuralConnection : IfcStructuralItem, ObjectHelper<IfcStructuralConnection,1> {
+		Maybe< Lazy< NotImplemented > > AppliedCondition;
+    };
+
+    // C++ wrapper for IfcStructuralSurfaceConnection
+    struct IfcStructuralSurfaceConnection : IfcStructuralConnection, ObjectHelper<IfcStructuralSurfaceConnection,0> {
+
+    };
+
+    // C++ wrapper for IfcCoilType
+    struct IfcCoilType : IfcEnergyConversionDeviceType, ObjectHelper<IfcCoilType,1> {
+		IfcCoilTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcDuctFittingType
+    struct IfcDuctFittingType : IfcFlowFittingType, ObjectHelper<IfcDuctFittingType,1> {
+		IfcDuctFittingTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcStyledItem
+    struct IfcStyledItem : IfcRepresentationItem, ObjectHelper<IfcStyledItem,3> {
+		Maybe< Lazy< IfcRepresentationItem > > Item;
+		ListOf< Lazy< IfcPresentationStyleAssignment >, 1, 0 > Styles;
+		Maybe< IfcLabel::Out > Name;
+    };
+
+    // C++ wrapper for IfcAnnotationOccurrence
+    struct IfcAnnotationOccurrence : IfcStyledItem, ObjectHelper<IfcAnnotationOccurrence,0> {
+
+    };
+
+    // C++ wrapper for IfcAnnotationCurveOccurrence
+    struct IfcAnnotationCurveOccurrence : IfcAnnotationOccurrence, ObjectHelper<IfcAnnotationCurveOccurrence,0> {
+
+    };
+
+    // C++ wrapper for IfcDimensionCurve
+    struct IfcDimensionCurve : IfcAnnotationCurveOccurrence, ObjectHelper<IfcDimensionCurve,0> {
+
+    };
+
+    // C++ wrapper for IfcBoundedCurve
+    struct IfcBoundedCurve : IfcCurve, ObjectHelper<IfcBoundedCurve,0> {
+
+    };
+
+    // C++ wrapper for IfcAxis1Placement
+    struct IfcAxis1Placement : IfcPlacement, ObjectHelper<IfcAxis1Placement,1> {
+		Maybe< Lazy< IfcDirection > > Axis;
+    };
+
+    // C++ wrapper for IfcStructuralPointAction
+    struct IfcStructuralPointAction : IfcStructuralAction, ObjectHelper<IfcStructuralPointAction,0> {
+
+    };
+
+    // C++ wrapper for IfcSpatialStructureElement
+    struct IfcSpatialStructureElement : IfcProduct, ObjectHelper<IfcSpatialStructureElement,2> {
+		Maybe< IfcLabel::Out > LongName;
+		IfcElementCompositionEnum::Out CompositionType;
+    };
+
+    // C++ wrapper for IfcSpace
+    struct IfcSpace : IfcSpatialStructureElement, ObjectHelper<IfcSpace,2> {
+		IfcInternalOrExternalEnum::Out InteriorOrExteriorSpace;
+		Maybe< IfcLengthMeasure::Out > ElevationWithFlooring;
+    };
+
+    // C++ wrapper for IfcCoolingTowerType
+    struct IfcCoolingTowerType : IfcEnergyConversionDeviceType, ObjectHelper<IfcCoolingTowerType,1> {
+		IfcCoolingTowerTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcFacetedBrepWithVoids
+    struct IfcFacetedBrepWithVoids : IfcManifoldSolidBrep, ObjectHelper<IfcFacetedBrepWithVoids,1> {
+		ListOf< Lazy< IfcClosedShell >, 1, 0 > Voids;
+    };
+
+    // C++ wrapper for IfcValveType
+    struct IfcValveType : IfcFlowControllerType, ObjectHelper<IfcValveType,1> {
+		IfcValveTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcSystemFurnitureElementType
+    struct IfcSystemFurnitureElementType : IfcFurnishingElementType, ObjectHelper<IfcSystemFurnitureElementType,0> {
+
+    };
+
+    // C++ wrapper for IfcDiscreteAccessory
+    struct IfcDiscreteAccessory : IfcElementComponent, ObjectHelper<IfcDiscreteAccessory,0> {
+
+    };
+
+    // C++ wrapper for IfcBuildingElementType
+    struct IfcBuildingElementType : IfcElementType, ObjectHelper<IfcBuildingElementType,0> {
+
+    };
+
+    // C++ wrapper for IfcRailingType
+    struct IfcRailingType : IfcBuildingElementType, ObjectHelper<IfcRailingType,1> {
+		IfcRailingTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcGasTerminalType
+    struct IfcGasTerminalType : IfcFlowTerminalType, ObjectHelper<IfcGasTerminalType,1> {
+		IfcGasTerminalTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcSpaceProgram
+    struct IfcSpaceProgram : IfcControl, ObjectHelper<IfcSpaceProgram,5> {
+		IfcIdentifier::Out SpaceProgramIdentifier;
+		Maybe< IfcAreaMeasure::Out > MaxRequiredArea;
+		Maybe< IfcAreaMeasure::Out > MinRequiredArea;
+		Maybe< Lazy< IfcSpatialStructureElement > > RequestedLocation;
+		IfcAreaMeasure::Out StandardRequiredArea;
+    };
+
+    // C++ wrapper for IfcCovering
+    struct IfcCovering : IfcBuildingElement, ObjectHelper<IfcCovering,1> {
+		Maybe< IfcCoveringTypeEnum::Out > PredefinedType;
+    };
+
+    // C++ wrapper for IfcPresentationStyle
+    struct IfcPresentationStyle :  ObjectHelper<IfcPresentationStyle,1> {
+		Maybe< IfcLabel::Out > Name;
+    };
+
+    // C++ wrapper for IfcElectricHeaterType
+    struct IfcElectricHeaterType : IfcFlowTerminalType, ObjectHelper<IfcElectricHeaterType,1> {
+		IfcElectricHeaterTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcBuildingStorey
+    struct IfcBuildingStorey : IfcSpatialStructureElement, ObjectHelper<IfcBuildingStorey,1> {
+		Maybe< IfcLengthMeasure::Out > Elevation;
+    };
+
+    // C++ wrapper for IfcVertex
+    struct IfcVertex : IfcTopologicalRepresentationItem, ObjectHelper<IfcVertex,0> {
+
+    };
+
+    // C++ wrapper for IfcVertexPoint
+    struct IfcVertexPoint : IfcVertex, ObjectHelper<IfcVertexPoint,1> {
+		Lazy< IfcPoint > VertexGeometry;
+    };
+
+    // C++ wrapper for IfcFlowInstrumentType
+    struct IfcFlowInstrumentType : IfcDistributionControlElementType, ObjectHelper<IfcFlowInstrumentType,1> {
+		IfcFlowInstrumentTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcParameterizedProfileDef
+    struct IfcParameterizedProfileDef : IfcProfileDef, ObjectHelper<IfcParameterizedProfileDef,1> {
+		Lazy< IfcAxis2Placement2D > Position;
+    };
+
+    // C++ wrapper for IfcUShapeProfileDef
+    struct IfcUShapeProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcUShapeProfileDef,8> {
+		IfcPositiveLengthMeasure::Out Depth;
+		IfcPositiveLengthMeasure::Out FlangeWidth;
+		IfcPositiveLengthMeasure::Out WebThickness;
+		IfcPositiveLengthMeasure::Out FlangeThickness;
+		Maybe< IfcPositiveLengthMeasure::Out > FilletRadius;
+		Maybe< IfcPositiveLengthMeasure::Out > EdgeRadius;
+		Maybe< IfcPlaneAngleMeasure::Out > FlangeSlope;
+		Maybe< IfcPositiveLengthMeasure::Out > CentreOfGravityInX;
+    };
+
+    // C++ wrapper for IfcRamp
+    struct IfcRamp : IfcBuildingElement, ObjectHelper<IfcRamp,1> {
+		IfcRampTypeEnum::Out ShapeType;
+    };
+
+    // C++ wrapper for IfcCompositeCurve
+    struct IfcCompositeCurve : IfcBoundedCurve, ObjectHelper<IfcCompositeCurve,2> {
+		ListOf< Lazy< IfcCompositeCurveSegment >, 1, 0 > Segments;
+		LOGICAL::Out SelfIntersect;
+    };
+
+    // C++ wrapper for IfcStructuralCurveMemberVarying
+    struct IfcStructuralCurveMemberVarying : IfcStructuralCurveMember, ObjectHelper<IfcStructuralCurveMemberVarying,0> {
+
+    };
+
+    // C++ wrapper for IfcRampFlightType
+    struct IfcRampFlightType : IfcBuildingElementType, ObjectHelper<IfcRampFlightType,1> {
+		IfcRampFlightTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcDraughtingCallout
+    struct IfcDraughtingCallout : IfcGeometricRepresentationItem, ObjectHelper<IfcDraughtingCallout,1> {
+		ListOf< IfcDraughtingCalloutElement, 1, 0 >::Out Contents;
+    };
+
+    // C++ wrapper for IfcDimensionCurveDirectedCallout
+    struct IfcDimensionCurveDirectedCallout : IfcDraughtingCallout, ObjectHelper<IfcDimensionCurveDirectedCallout,0> {
+
+    };
+
+    // C++ wrapper for IfcRadiusDimension
+    struct IfcRadiusDimension : IfcDimensionCurveDirectedCallout, ObjectHelper<IfcRadiusDimension,0> {
+
+    };
+
+    // C++ wrapper for IfcEdgeFeature
+    struct IfcEdgeFeature : IfcFeatureElementSubtraction, ObjectHelper<IfcEdgeFeature,1> {
+		Maybe< IfcPositiveLengthMeasure::Out > FeatureLength;
+    };
+
+    // C++ wrapper for IfcSweptAreaSolid
+    struct IfcSweptAreaSolid : IfcSolidModel, ObjectHelper<IfcSweptAreaSolid,2> {
+		Lazy< IfcProfileDef > SweptArea;
+		Lazy< IfcAxis2Placement3D > Position;
+    };
+
+    // C++ wrapper for IfcExtrudedAreaSolid
+    struct IfcExtrudedAreaSolid : IfcSweptAreaSolid, ObjectHelper<IfcExtrudedAreaSolid,2> {
+		Lazy< IfcDirection > ExtrudedDirection;
+		IfcPositiveLengthMeasure::Out Depth;
+    };
+
+    // C++ wrapper for IfcAnnotationTextOccurrence
+    struct IfcAnnotationTextOccurrence : IfcAnnotationOccurrence, ObjectHelper<IfcAnnotationTextOccurrence,0> {
+
+    };
+
+    // C++ wrapper for IfcStair
+    struct IfcStair : IfcBuildingElement, ObjectHelper<IfcStair,1> {
+		IfcStairTypeEnum::Out ShapeType;
+    };
+
+    // C++ wrapper for IfcFillAreaStyleTileSymbolWithStyle
+    struct IfcFillAreaStyleTileSymbolWithStyle : IfcGeometricRepresentationItem, ObjectHelper<IfcFillAreaStyleTileSymbolWithStyle,1> {
+		Lazy< IfcAnnotationSymbolOccurrence > Symbol;
+    };
+
+    // C++ wrapper for IfcAnnotationSymbolOccurrence
+    struct IfcAnnotationSymbolOccurrence : IfcAnnotationOccurrence, ObjectHelper<IfcAnnotationSymbolOccurrence,0> {
+
+    };
+
+    // C++ wrapper for IfcTerminatorSymbol
+    struct IfcTerminatorSymbol : IfcAnnotationSymbolOccurrence, ObjectHelper<IfcTerminatorSymbol,1> {
+		Lazy< IfcAnnotationCurveOccurrence > AnnotatedCurve;
+    };
+
+    // C++ wrapper for IfcDimensionCurveTerminator
+    struct IfcDimensionCurveTerminator : IfcTerminatorSymbol, ObjectHelper<IfcDimensionCurveTerminator,1> {
+		IfcDimensionExtentUsage::Out Role;
+    };
+
+    // C++ wrapper for IfcRectangleProfileDef
+    struct IfcRectangleProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcRectangleProfileDef,2> {
+		IfcPositiveLengthMeasure::Out XDim;
+		IfcPositiveLengthMeasure::Out YDim;
+    };
+
+    // C++ wrapper for IfcRectangleHollowProfileDef
+    struct IfcRectangleHollowProfileDef : IfcRectangleProfileDef, ObjectHelper<IfcRectangleHollowProfileDef,3> {
+		IfcPositiveLengthMeasure::Out WallThickness;
+		Maybe< IfcPositiveLengthMeasure::Out > InnerFilletRadius;
+		Maybe< IfcPositiveLengthMeasure::Out > OuterFilletRadius;
+    };
+
+    // C++ wrapper for IfcLocalPlacement
+    struct IfcLocalPlacement : IfcObjectPlacement, ObjectHelper<IfcLocalPlacement,2> {
+		Maybe< Lazy< IfcObjectPlacement > > PlacementRelTo;
+		IfcAxis2Placement::Out RelativePlacement;
+    };
+
+    // C++ wrapper for IfcTask
+    struct IfcTask : IfcProcess, ObjectHelper<IfcTask,5> {
+		IfcIdentifier::Out TaskId;
+		Maybe< IfcLabel::Out > Status;
+		Maybe< IfcLabel::Out > WorkMethod;
+		BOOLEAN::Out IsMilestone;
+		Maybe< INTEGER::Out > Priority;
+    };
+
+    // C++ wrapper for IfcAnnotationFillAreaOccurrence
+    struct IfcAnnotationFillAreaOccurrence : IfcAnnotationOccurrence, ObjectHelper<IfcAnnotationFillAreaOccurrence,2> {
+		Maybe< Lazy< IfcPoint > > FillStyleTarget;
+		Maybe< IfcGlobalOrLocalEnum::Out > GlobalOrLocal;
+    };
+
+    // C++ wrapper for IfcFace
+    struct IfcFace : IfcTopologicalRepresentationItem, ObjectHelper<IfcFace,1> {
+		ListOf< Lazy< IfcFaceBound >, 1, 0 > Bounds;
+    };
+
+    // C++ wrapper for IfcFlowSegmentType
+    struct IfcFlowSegmentType : IfcDistributionFlowElementType, ObjectHelper<IfcFlowSegmentType,0> {
+
+    };
+
+    // C++ wrapper for IfcDuctSegmentType
+    struct IfcDuctSegmentType : IfcFlowSegmentType, ObjectHelper<IfcDuctSegmentType,1> {
+		IfcDuctSegmentTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcConstructionResource
+    struct IfcConstructionResource : IfcResource, ObjectHelper<IfcConstructionResource,4> {
+		Maybe< IfcIdentifier::Out > ResourceIdentifier;
+		Maybe< IfcLabel::Out > ResourceGroup;
+		Maybe< IfcResourceConsumptionEnum::Out > ResourceConsumption;
+		Maybe< Lazy< NotImplemented > > BaseQuantity;
+    };
+
+    // C++ wrapper for IfcConstructionEquipmentResource
+    struct IfcConstructionEquipmentResource : IfcConstructionResource, ObjectHelper<IfcConstructionEquipmentResource,0> {
+
+    };
+
+    // C++ wrapper for IfcSanitaryTerminalType
+    struct IfcSanitaryTerminalType : IfcFlowTerminalType, ObjectHelper<IfcSanitaryTerminalType,1> {
+		IfcSanitaryTerminalTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcCircleProfileDef
+    struct IfcCircleProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcCircleProfileDef,1> {
+		IfcPositiveLengthMeasure::Out Radius;
+    };
+
+    // C++ wrapper for IfcStructuralReaction
+    struct IfcStructuralReaction : IfcStructuralActivity, ObjectHelper<IfcStructuralReaction,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuralPointReaction
+    struct IfcStructuralPointReaction : IfcStructuralReaction, ObjectHelper<IfcStructuralPointReaction,0> {
+
+    };
+
+    // C++ wrapper for IfcRailing
+    struct IfcRailing : IfcBuildingElement, ObjectHelper<IfcRailing,1> {
+		Maybe< IfcRailingTypeEnum::Out > PredefinedType;
+    };
+
+    // C++ wrapper for IfcTextLiteral
+    struct IfcTextLiteral : IfcGeometricRepresentationItem, ObjectHelper<IfcTextLiteral,3> {
+		IfcPresentableText::Out Literal;
+		IfcAxis2Placement::Out Placement;
+		IfcTextPath::Out Path;
+    };
+
+    // C++ wrapper for IfcCartesianTransformationOperator
+    struct IfcCartesianTransformationOperator : IfcGeometricRepresentationItem, ObjectHelper<IfcCartesianTransformationOperator,4> {
+		Maybe< Lazy< IfcDirection > > Axis1;
+		Maybe< Lazy< IfcDirection > > Axis2;
+		Lazy< IfcCartesianPoint > LocalOrigin;
+		Maybe< REAL::Out > Scale;
+    };
+
+    // C++ wrapper for IfcLinearDimension
+    struct IfcLinearDimension : IfcDimensionCurveDirectedCallout, ObjectHelper<IfcLinearDimension,0> {
+
+    };
+
+    // C++ wrapper for IfcDamperType
+    struct IfcDamperType : IfcFlowControllerType, ObjectHelper<IfcDamperType,1> {
+		IfcDamperTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcSIUnit
+    struct IfcSIUnit : IfcNamedUnit, ObjectHelper<IfcSIUnit,2> {
+		Maybe< IfcSIPrefix::Out > Prefix;
+		IfcSIUnitName::Out Name;
+    };
+
+    // C++ wrapper for IfcDistributionElement
+    struct IfcDistributionElement : IfcElement, ObjectHelper<IfcDistributionElement,0> {
+
+    };
+
+    // C++ wrapper for IfcDistributionControlElement
+    struct IfcDistributionControlElement : IfcDistributionElement, ObjectHelper<IfcDistributionControlElement,1> {
+		Maybe< IfcIdentifier::Out > ControlElementId;
+    };
+
+    // C++ wrapper for IfcTransformerType
+    struct IfcTransformerType : IfcEnergyConversionDeviceType, ObjectHelper<IfcTransformerType,1> {
+		IfcTransformerTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcLaborResource
+    struct IfcLaborResource : IfcConstructionResource, ObjectHelper<IfcLaborResource,1> {
+		Maybe< IfcText::Out > SkillSet;
+    };
+
+    // C++ wrapper for IfcFurnitureStandard
+    struct IfcFurnitureStandard : IfcControl, ObjectHelper<IfcFurnitureStandard,0> {
+
+    };
+
+    // C++ wrapper for IfcStairFlightType
+    struct IfcStairFlightType : IfcBuildingElementType, ObjectHelper<IfcStairFlightType,1> {
+		IfcStairFlightTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcWorkControl
+    struct IfcWorkControl : IfcControl, ObjectHelper<IfcWorkControl,10> {
+		IfcIdentifier::Out Identifier;
+		IfcDateTimeSelect::Out CreationDate;
+		Maybe< ListOf< Lazy< NotImplemented >, 1, 0 > > Creators;
+		Maybe< IfcLabel::Out > Purpose;
+		Maybe< IfcTimeMeasure::Out > Duration;
+		Maybe< IfcTimeMeasure::Out > TotalFloat;
+		IfcDateTimeSelect::Out StartTime;
+		Maybe< IfcDateTimeSelect::Out > FinishTime;
+		Maybe< IfcWorkControlTypeEnum::Out > WorkControlType;
+		Maybe< IfcLabel::Out > UserDefinedControlType;
+    };
+
+    // C++ wrapper for IfcWorkPlan
+    struct IfcWorkPlan : IfcWorkControl, ObjectHelper<IfcWorkPlan,0> {
+
+    };
+
+    // C++ wrapper for IfcCondition
+    struct IfcCondition : IfcGroup, ObjectHelper<IfcCondition,0> {
+
+    };
+
+    // C++ wrapper for IfcWindow
+    struct IfcWindow : IfcBuildingElement, ObjectHelper<IfcWindow,2> {
+		Maybe< IfcPositiveLengthMeasure::Out > OverallHeight;
+		Maybe< IfcPositiveLengthMeasure::Out > OverallWidth;
+    };
+
+    // C++ wrapper for IfcProtectiveDeviceType
+    struct IfcProtectiveDeviceType : IfcFlowControllerType, ObjectHelper<IfcProtectiveDeviceType,1> {
+		IfcProtectiveDeviceTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcJunctionBoxType
+    struct IfcJunctionBoxType : IfcFlowFittingType, ObjectHelper<IfcJunctionBoxType,1> {
+		IfcJunctionBoxTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcStructuralAnalysisModel
+    struct IfcStructuralAnalysisModel : IfcSystem, ObjectHelper<IfcStructuralAnalysisModel,4> {
+		IfcAnalysisModelTypeEnum::Out PredefinedType;
+		Maybe< Lazy< IfcAxis2Placement3D > > OrientationOf2DPlane;
+		Maybe< ListOf< Lazy< IfcStructuralLoadGroup >, 1, 0 > > LoadedBy;
+		Maybe< ListOf< Lazy< IfcStructuralResultGroup >, 1, 0 > > HasResults;
+    };
+
+    // C++ wrapper for IfcAxis2Placement2D
+    struct IfcAxis2Placement2D : IfcPlacement, ObjectHelper<IfcAxis2Placement2D,1> {
+		Maybe< Lazy< IfcDirection > > RefDirection;
+    };
+
+    // C++ wrapper for IfcSpaceType
+    struct IfcSpaceType : IfcSpatialStructureElementType, ObjectHelper<IfcSpaceType,1> {
+		IfcSpaceTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcEllipseProfileDef
+    struct IfcEllipseProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcEllipseProfileDef,2> {
+		IfcPositiveLengthMeasure::Out SemiAxis1;
+		IfcPositiveLengthMeasure::Out SemiAxis2;
+    };
+
+    // C++ wrapper for IfcDistributionFlowElement
+    struct IfcDistributionFlowElement : IfcDistributionElement, ObjectHelper<IfcDistributionFlowElement,0> {
+
+    };
+
+    // C++ wrapper for IfcFlowMovingDevice
+    struct IfcFlowMovingDevice : IfcDistributionFlowElement, ObjectHelper<IfcFlowMovingDevice,0> {
+
+    };
+
+    // C++ wrapper for IfcSurfaceStyleWithTextures
+    struct IfcSurfaceStyleWithTextures :  ObjectHelper<IfcSurfaceStyleWithTextures,1> {
+		ListOf< Lazy< NotImplemented >, 1, 0 > Textures;
+    };
+
+    // C++ wrapper for IfcGeometricSet
+    struct IfcGeometricSet : IfcGeometricRepresentationItem, ObjectHelper<IfcGeometricSet,1> {
+		ListOf< IfcGeometricSetSelect, 1, 0 >::Out Elements;
+    };
+
+    // C++ wrapper for IfcProjectOrder
+    struct IfcProjectOrder : IfcControl, ObjectHelper<IfcProjectOrder,3> {
+		IfcIdentifier::Out ID;
+		IfcProjectOrderTypeEnum::Out PredefinedType;
+		Maybe< IfcLabel::Out > Status;
+    };
+
+    // C++ wrapper for IfcBSplineCurve
+    struct IfcBSplineCurve : IfcBoundedCurve, ObjectHelper<IfcBSplineCurve,5> {
+		INTEGER::Out Degree;
+		ListOf< Lazy< IfcCartesianPoint >, 2, 0 > ControlPointsList;
+		IfcBSplineCurveForm::Out CurveForm;
+		LOGICAL::Out ClosedCurve;
+		LOGICAL::Out SelfIntersect;
+    };
+
+    // C++ wrapper for IfcBezierCurve
+    struct IfcBezierCurve : IfcBSplineCurve, ObjectHelper<IfcBezierCurve,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuralPointConnection
+    struct IfcStructuralPointConnection : IfcStructuralConnection, ObjectHelper<IfcStructuralPointConnection,0> {
+
+    };
+
+    // C++ wrapper for IfcFlowController
+    struct IfcFlowController : IfcDistributionFlowElement, ObjectHelper<IfcFlowController,0> {
+
+    };
+
+    // C++ wrapper for IfcElectricDistributionPoint
+    struct IfcElectricDistributionPoint : IfcFlowController, ObjectHelper<IfcElectricDistributionPoint,2> {
+		IfcElectricDistributionPointFunctionEnum::Out DistributionPointFunction;
+		Maybe< IfcLabel::Out > UserDefinedFunction;
+    };
+
+    // C++ wrapper for IfcSite
+    struct IfcSite : IfcSpatialStructureElement, ObjectHelper<IfcSite,5> {
+		Maybe< IfcCompoundPlaneAngleMeasure::Out > RefLatitude;
+		Maybe< IfcCompoundPlaneAngleMeasure::Out > RefLongitude;
+		Maybe< IfcLengthMeasure::Out > RefElevation;
+		Maybe< IfcLabel::Out > LandTitleNumber;
+		Maybe< Lazy< NotImplemented > > SiteAddress;
+    };
+
+    // C++ wrapper for IfcOffsetCurve3D
+    struct IfcOffsetCurve3D : IfcCurve, ObjectHelper<IfcOffsetCurve3D,4> {
+		Lazy< IfcCurve > BasisCurve;
+		IfcLengthMeasure::Out Distance;
+		LOGICAL::Out SelfIntersect;
+		Lazy< IfcDirection > RefDirection;
+    };
+
+    // C++ wrapper for IfcVirtualElement
+    struct IfcVirtualElement : IfcElement, ObjectHelper<IfcVirtualElement,0> {
+
+    };
+
+    // C++ wrapper for IfcConstructionProductResource
+    struct IfcConstructionProductResource : IfcConstructionResource, ObjectHelper<IfcConstructionProductResource,0> {
+
+    };
+
+    // C++ wrapper for IfcSurfaceCurveSweptAreaSolid
+    struct IfcSurfaceCurveSweptAreaSolid : IfcSweptAreaSolid, ObjectHelper<IfcSurfaceCurveSweptAreaSolid,4> {
+		Lazy< IfcCurve > Directrix;
+		IfcParameterValue::Out StartParam;
+		IfcParameterValue::Out EndParam;
+		Lazy< IfcSurface > ReferenceSurface;
+    };
+
+    // C++ wrapper for IfcCartesianTransformationOperator3D
+    struct IfcCartesianTransformationOperator3D : IfcCartesianTransformationOperator, ObjectHelper<IfcCartesianTransformationOperator3D,1> {
+		Maybe< Lazy< IfcDirection > > Axis3;
+    };
+
+    // C++ wrapper for IfcCartesianTransformationOperator3DnonUniform
+    struct IfcCartesianTransformationOperator3DnonUniform : IfcCartesianTransformationOperator3D, ObjectHelper<IfcCartesianTransformationOperator3DnonUniform,2> {
+		Maybe< REAL::Out > Scale2;
+		Maybe< REAL::Out > Scale3;
+    };
+
+    // C++ wrapper for IfcCrewResource
+    struct IfcCrewResource : IfcConstructionResource, ObjectHelper<IfcCrewResource,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuralSurfaceMember
+    struct IfcStructuralSurfaceMember : IfcStructuralMember, ObjectHelper<IfcStructuralSurfaceMember,2> {
+		IfcStructuralSurfaceTypeEnum::Out PredefinedType;
+		Maybe< IfcPositiveLengthMeasure::Out > Thickness;
+    };
+
+    // C++ wrapper for Ifc2DCompositeCurve
+    struct Ifc2DCompositeCurve : IfcCompositeCurve, ObjectHelper<Ifc2DCompositeCurve,0> {
+
+    };
+
+    // C++ wrapper for IfcRepresentationContext
+    struct IfcRepresentationContext :  ObjectHelper<IfcRepresentationContext,2> {
+		Maybe< IfcLabel::Out > ContextIdentifier;
+		Maybe< IfcLabel::Out > ContextType;
+    };
+
+    // C++ wrapper for IfcGeometricRepresentationContext
+    struct IfcGeometricRepresentationContext : IfcRepresentationContext, ObjectHelper<IfcGeometricRepresentationContext,4> {
+		IfcDimensionCount::Out CoordinateSpaceDimension;
+		Maybe< REAL::Out > Precision;
+		IfcAxis2Placement::Out WorldCoordinateSystem;
+		Maybe< Lazy< IfcDirection > > TrueNorth;
+    };
+
+    // C++ wrapper for IfcFlowTreatmentDevice
+    struct IfcFlowTreatmentDevice : IfcDistributionFlowElement, ObjectHelper<IfcFlowTreatmentDevice,0> {
+
+    };
+
+    // C++ wrapper for IfcRightCircularCylinder
+    struct IfcRightCircularCylinder : IfcCsgPrimitive3D, ObjectHelper<IfcRightCircularCylinder,2> {
+		IfcPositiveLengthMeasure::Out Height;
+		IfcPositiveLengthMeasure::Out Radius;
+    };
+
+    // C++ wrapper for IfcWasteTerminalType
+    struct IfcWasteTerminalType : IfcFlowTerminalType, ObjectHelper<IfcWasteTerminalType,1> {
+		IfcWasteTerminalTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcBuildingElementComponent
+    struct IfcBuildingElementComponent : IfcBuildingElement, ObjectHelper<IfcBuildingElementComponent,0> {
+
+    };
+
+    // C++ wrapper for IfcBuildingElementPart
+    struct IfcBuildingElementPart : IfcBuildingElementComponent, ObjectHelper<IfcBuildingElementPart,0> {
+
+    };
+
+    // C++ wrapper for IfcWall
+    struct IfcWall : IfcBuildingElement, ObjectHelper<IfcWall,0> {
+
+    };
+
+    // C++ wrapper for IfcWallStandardCase
+    struct IfcWallStandardCase : IfcWall, ObjectHelper<IfcWallStandardCase,0> {
+
+    };
+
+    // C++ wrapper for IfcPath
+    struct IfcPath : IfcTopologicalRepresentationItem, ObjectHelper<IfcPath,1> {
+		ListOf< Lazy< IfcOrientedEdge >, 1, 0 > EdgeList;
+    };
+
+    // C++ wrapper for IfcDefinedSymbol
+    struct IfcDefinedSymbol : IfcGeometricRepresentationItem, ObjectHelper<IfcDefinedSymbol,2> {
+		IfcDefinedSymbolSelect::Out Definition;
+		Lazy< IfcCartesianTransformationOperator2D > Target;
+    };
+
+    // C++ wrapper for IfcStructuralSurfaceMemberVarying
+    struct IfcStructuralSurfaceMemberVarying : IfcStructuralSurfaceMember, ObjectHelper<IfcStructuralSurfaceMemberVarying,2> {
+		ListOf< IfcPositiveLengthMeasure, 2, 0 >::Out SubsequentThickness;
+		Lazy< NotImplemented > VaryingThicknessLocation;
+    };
+
+    // C++ wrapper for IfcPoint
+    struct IfcPoint : IfcGeometricRepresentationItem, ObjectHelper<IfcPoint,0> {
+
+    };
+
+    // C++ wrapper for IfcSurfaceOfRevolution
+    struct IfcSurfaceOfRevolution : IfcSweptSurface, ObjectHelper<IfcSurfaceOfRevolution,1> {
+		Lazy< IfcAxis1Placement > AxisPosition;
+    };
+
+    // C++ wrapper for IfcFlowTerminal
+    struct IfcFlowTerminal : IfcDistributionFlowElement, ObjectHelper<IfcFlowTerminal,0> {
+
+    };
+
+    // C++ wrapper for IfcFurnishingElement
+    struct IfcFurnishingElement : IfcElement, ObjectHelper<IfcFurnishingElement,0> {
+
+    };
+
+    // C++ wrapper for IfcSurfaceStyleShading
+    struct IfcSurfaceStyleShading :  ObjectHelper<IfcSurfaceStyleShading,1> {
+		Lazy< IfcColourRgb > SurfaceColour;
+    };
+
+    // C++ wrapper for IfcSurfaceStyleRendering
+    struct IfcSurfaceStyleRendering : IfcSurfaceStyleShading, ObjectHelper<IfcSurfaceStyleRendering,8> {
+		Maybe< IfcNormalisedRatioMeasure::Out > Transparency;
+		Maybe< IfcColourOrFactor::Out > DiffuseColour;
+		Maybe< IfcColourOrFactor::Out > TransmissionColour;
+		Maybe< IfcColourOrFactor::Out > DiffuseTransmissionColour;
+		Maybe< IfcColourOrFactor::Out > ReflectionColour;
+		Maybe< IfcColourOrFactor::Out > SpecularColour;
+		Maybe< IfcSpecularHighlightSelect::Out > SpecularHighlight;
+		IfcReflectanceMethodEnum::Out ReflectanceMethod;
+    };
+
+    // C++ wrapper for IfcCircleHollowProfileDef
+    struct IfcCircleHollowProfileDef : IfcCircleProfileDef, ObjectHelper<IfcCircleHollowProfileDef,1> {
+		IfcPositiveLengthMeasure::Out WallThickness;
+    };
+
+    // C++ wrapper for IfcFlowMovingDeviceType
+    struct IfcFlowMovingDeviceType : IfcDistributionFlowElementType, ObjectHelper<IfcFlowMovingDeviceType,0> {
+
+    };
+
+    // C++ wrapper for IfcFanType
+    struct IfcFanType : IfcFlowMovingDeviceType, ObjectHelper<IfcFanType,1> {
+		IfcFanTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcStructuralPlanarActionVarying
+    struct IfcStructuralPlanarActionVarying : IfcStructuralPlanarAction, ObjectHelper<IfcStructuralPlanarActionVarying,2> {
+		Lazy< NotImplemented > VaryingAppliedLoadLocation;
+		ListOf< Lazy< NotImplemented >, 2, 0 > SubsequentAppliedLoads;
+    };
+
+    // C++ wrapper for IfcProductRepresentation
+    struct IfcProductRepresentation :  ObjectHelper<IfcProductRepresentation,3> {
+		Maybe< IfcLabel::Out > Name;
+		Maybe< IfcText::Out > Description;
+		ListOf< Lazy< IfcRepresentation >, 1, 0 > Representations;
+    };
+
+    // C++ wrapper for IfcStackTerminalType
+    struct IfcStackTerminalType : IfcFlowTerminalType, ObjectHelper<IfcStackTerminalType,1> {
+		IfcStackTerminalTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcReinforcingElement
+    struct IfcReinforcingElement : IfcBuildingElementComponent, ObjectHelper<IfcReinforcingElement,1> {
+		Maybe< IfcLabel::Out > SteelGrade;
+    };
+
+    // C++ wrapper for IfcReinforcingMesh
+    struct IfcReinforcingMesh : IfcReinforcingElement, ObjectHelper<IfcReinforcingMesh,8> {
+		Maybe< IfcPositiveLengthMeasure::Out > MeshLength;
+		Maybe< IfcPositiveLengthMeasure::Out > MeshWidth;
+		IfcPositiveLengthMeasure::Out LongitudinalBarNominalDiameter;
+		IfcPositiveLengthMeasure::Out TransverseBarNominalDiameter;
+		IfcAreaMeasure::Out LongitudinalBarCrossSectionArea;
+		IfcAreaMeasure::Out TransverseBarCrossSectionArea;
+		IfcPositiveLengthMeasure::Out LongitudinalBarSpacing;
+		IfcPositiveLengthMeasure::Out TransverseBarSpacing;
+    };
+
+    // C++ wrapper for IfcOrderAction
+    struct IfcOrderAction : IfcTask, ObjectHelper<IfcOrderAction,1> {
+		IfcIdentifier::Out ActionID;
+    };
+
+    // C++ wrapper for IfcLightSource
+    struct IfcLightSource : IfcGeometricRepresentationItem, ObjectHelper<IfcLightSource,4> {
+		Maybe< IfcLabel::Out > Name;
+		Lazy< IfcColourRgb > LightColour;
+		Maybe< IfcNormalisedRatioMeasure::Out > AmbientIntensity;
+		Maybe< IfcNormalisedRatioMeasure::Out > Intensity;
+    };
+
+    // C++ wrapper for IfcLightSourceDirectional
+    struct IfcLightSourceDirectional : IfcLightSource, ObjectHelper<IfcLightSourceDirectional,1> {
+		Lazy< IfcDirection > Orientation;
+    };
+
+    // C++ wrapper for IfcLoop
+    struct IfcLoop : IfcTopologicalRepresentationItem, ObjectHelper<IfcLoop,0> {
+
+    };
+
+    // C++ wrapper for IfcVertexLoop
+    struct IfcVertexLoop : IfcLoop, ObjectHelper<IfcVertexLoop,1> {
+		Lazy< IfcVertex > LoopVertex;
+    };
+
+    // C++ wrapper for IfcChamferEdgeFeature
+    struct IfcChamferEdgeFeature : IfcEdgeFeature, ObjectHelper<IfcChamferEdgeFeature,2> {
+		Maybe< IfcPositiveLengthMeasure::Out > Width;
+		Maybe< IfcPositiveLengthMeasure::Out > Height;
+    };
+
+    // C++ wrapper for IfcElementComponentType
+    struct IfcElementComponentType : IfcElementType, ObjectHelper<IfcElementComponentType,0> {
+
+    };
+
+    // C++ wrapper for IfcFastenerType
+    struct IfcFastenerType : IfcElementComponentType, ObjectHelper<IfcFastenerType,0> {
+
+    };
+
+    // C++ wrapper for IfcMechanicalFastenerType
+    struct IfcMechanicalFastenerType : IfcFastenerType, ObjectHelper<IfcMechanicalFastenerType,0> {
+
+    };
+
+    // C++ wrapper for IfcScheduleTimeControl
+    struct IfcScheduleTimeControl : IfcControl, ObjectHelper<IfcScheduleTimeControl,18> {
+		Maybe< IfcDateTimeSelect::Out > ActualStart;
+		Maybe< IfcDateTimeSelect::Out > EarlyStart;
+		Maybe< IfcDateTimeSelect::Out > LateStart;
+		Maybe< IfcDateTimeSelect::Out > ScheduleStart;
+		Maybe< IfcDateTimeSelect::Out > ActualFinish;
+		Maybe< IfcDateTimeSelect::Out > EarlyFinish;
+		Maybe< IfcDateTimeSelect::Out > LateFinish;
+		Maybe< IfcDateTimeSelect::Out > ScheduleFinish;
+		Maybe< IfcTimeMeasure::Out > ScheduleDuration;
+		Maybe< IfcTimeMeasure::Out > ActualDuration;
+		Maybe< IfcTimeMeasure::Out > RemainingTime;
+		Maybe< IfcTimeMeasure::Out > FreeFloat;
+		Maybe< IfcTimeMeasure::Out > TotalFloat;
+		Maybe< BOOLEAN::Out > IsCritical;
+		Maybe< IfcDateTimeSelect::Out > StatusTime;
+		Maybe< IfcTimeMeasure::Out > StartFloat;
+		Maybe< IfcTimeMeasure::Out > FinishFloat;
+		Maybe< IfcPositiveRatioMeasure::Out > Completion;
+    };
+
+    // C++ wrapper for IfcSurfaceStyle
+    struct IfcSurfaceStyle : IfcPresentationStyle, ObjectHelper<IfcSurfaceStyle,2> {
+		IfcSurfaceSide::Out Side;
+		ListOf< IfcSurfaceStyleElementSelect, 1, 5 >::Out Styles;
+    };
+
+    // C++ wrapper for IfcOpenShell
+    struct IfcOpenShell : IfcConnectedFaceSet, ObjectHelper<IfcOpenShell,0> {
+
+    };
+
+    // C++ wrapper for IfcSubContractResource
+    struct IfcSubContractResource : IfcConstructionResource, ObjectHelper<IfcSubContractResource,2> {
+		Maybe< IfcActorSelect::Out > SubContractor;
+		Maybe< IfcText::Out > JobDescription;
+    };
+
+    // C++ wrapper for IfcSweptDiskSolid
+    struct IfcSweptDiskSolid : IfcSolidModel, ObjectHelper<IfcSweptDiskSolid,5> {
+		Lazy< IfcCurve > Directrix;
+		IfcPositiveLengthMeasure::Out Radius;
+		Maybe< IfcPositiveLengthMeasure::Out > InnerRadius;
+		IfcParameterValue::Out StartParam;
+		IfcParameterValue::Out EndParam;
+    };
+
+    // C++ wrapper for IfcTankType
+    struct IfcTankType : IfcFlowStorageDeviceType, ObjectHelper<IfcTankType,1> {
+		IfcTankTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcSphere
+    struct IfcSphere : IfcCsgPrimitive3D, ObjectHelper<IfcSphere,1> {
+		IfcPositiveLengthMeasure::Out Radius;
+    };
+
+    // C++ wrapper for IfcPolyLoop
+    struct IfcPolyLoop : IfcLoop, ObjectHelper<IfcPolyLoop,1> {
+		ListOf< Lazy< IfcCartesianPoint >, 3, 0 > Polygon;
+    };
+
+    // C++ wrapper for IfcCableCarrierFittingType
+    struct IfcCableCarrierFittingType : IfcFlowFittingType, ObjectHelper<IfcCableCarrierFittingType,1> {
+		IfcCableCarrierFittingTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcHumidifierType
+    struct IfcHumidifierType : IfcEnergyConversionDeviceType, ObjectHelper<IfcHumidifierType,1> {
+		IfcHumidifierTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcPerformanceHistory
+    struct IfcPerformanceHistory : IfcControl, ObjectHelper<IfcPerformanceHistory,1> {
+		IfcLabel::Out LifeCyclePhase;
+    };
+
+    // C++ wrapper for IfcShapeModel
+    struct IfcShapeModel : IfcRepresentation, ObjectHelper<IfcShapeModel,0> {
+
+    };
+
+    // C++ wrapper for IfcTopologyRepresentation
+    struct IfcTopologyRepresentation : IfcShapeModel, ObjectHelper<IfcTopologyRepresentation,0> {
+
+    };
+
+    // C++ wrapper for IfcBuilding
+    struct IfcBuilding : IfcSpatialStructureElement, ObjectHelper<IfcBuilding,3> {
+		Maybe< IfcLengthMeasure::Out > ElevationOfRefHeight;
+		Maybe< IfcLengthMeasure::Out > ElevationOfTerrain;
+		Maybe< Lazy< NotImplemented > > BuildingAddress;
+    };
+
+    // C++ wrapper for IfcRoundedRectangleProfileDef
+    struct IfcRoundedRectangleProfileDef : IfcRectangleProfileDef, ObjectHelper<IfcRoundedRectangleProfileDef,1> {
+		IfcPositiveLengthMeasure::Out RoundingRadius;
+    };
+
+    // C++ wrapper for IfcStairFlight
+    struct IfcStairFlight : IfcBuildingElement, ObjectHelper<IfcStairFlight,4> {
+		Maybe< INTEGER::Out > NumberOfRiser;
+		Maybe< INTEGER::Out > NumberOfTreads;
+		Maybe< IfcPositiveLengthMeasure::Out > RiserHeight;
+		Maybe< IfcPositiveLengthMeasure::Out > TreadLength;
+    };
+
+    // C++ wrapper for IfcDistributionChamberElement
+    struct IfcDistributionChamberElement : IfcDistributionFlowElement, ObjectHelper<IfcDistributionChamberElement,0> {
+
+    };
+
+    // C++ wrapper for IfcShapeRepresentation
+    struct IfcShapeRepresentation : IfcShapeModel, ObjectHelper<IfcShapeRepresentation,0> {
+
+    };
+
+    // C++ wrapper for IfcRampFlight
+    struct IfcRampFlight : IfcBuildingElement, ObjectHelper<IfcRampFlight,0> {
+
+    };
+
+    // C++ wrapper for IfcBeamType
+    struct IfcBeamType : IfcBuildingElementType, ObjectHelper<IfcBeamType,1> {
+		IfcBeamTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcRelDecomposes
+    struct IfcRelDecomposes : IfcRelationship, ObjectHelper<IfcRelDecomposes,2> {
+		Lazy< IfcObjectDefinition > RelatingObject;
+		ListOf< Lazy< IfcObjectDefinition >, 1, 0 > RelatedObjects;
+    };
+
+    // C++ wrapper for IfcRoof
+    struct IfcRoof : IfcBuildingElement, ObjectHelper<IfcRoof,1> {
+		IfcRoofTypeEnum::Out ShapeType;
+    };
+
+    // C++ wrapper for IfcFooting
+    struct IfcFooting : IfcBuildingElement, ObjectHelper<IfcFooting,1> {
+		IfcFootingTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcLightSourceAmbient
+    struct IfcLightSourceAmbient : IfcLightSource, ObjectHelper<IfcLightSourceAmbient,0> {
+
+    };
+
+    // C++ wrapper for IfcWindowStyle
+    struct IfcWindowStyle : IfcTypeProduct, ObjectHelper<IfcWindowStyle,4> {
+		IfcWindowStyleConstructionEnum::Out ConstructionType;
+		IfcWindowStyleOperationEnum::Out OperationType;
+		BOOLEAN::Out ParameterTakesPrecedence;
+		BOOLEAN::Out Sizeable;
+    };
+
+    // C++ wrapper for IfcBuildingElementProxyType
+    struct IfcBuildingElementProxyType : IfcBuildingElementType, ObjectHelper<IfcBuildingElementProxyType,1> {
+		IfcBuildingElementProxyTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcAxis2Placement3D
+    struct IfcAxis2Placement3D : IfcPlacement, ObjectHelper<IfcAxis2Placement3D,2> {
+		Maybe< Lazy< IfcDirection > > Axis;
+		Maybe< Lazy< IfcDirection > > RefDirection;
+    };
+
+    // C++ wrapper for IfcEdgeCurve
+    struct IfcEdgeCurve : IfcEdge, ObjectHelper<IfcEdgeCurve,2> {
+		Lazy< IfcCurve > EdgeGeometry;
+		BOOLEAN::Out SameSense;
+    };
+
+    // C++ wrapper for IfcClosedShell
+    struct IfcClosedShell : IfcConnectedFaceSet, ObjectHelper<IfcClosedShell,0> {
+
+    };
+
+    // C++ wrapper for IfcTendonAnchor
+    struct IfcTendonAnchor : IfcReinforcingElement, ObjectHelper<IfcTendonAnchor,0> {
+
+    };
+
+    // C++ wrapper for IfcCondenserType
+    struct IfcCondenserType : IfcEnergyConversionDeviceType, ObjectHelper<IfcCondenserType,1> {
+		IfcCondenserTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcPipeSegmentType
+    struct IfcPipeSegmentType : IfcFlowSegmentType, ObjectHelper<IfcPipeSegmentType,1> {
+		IfcPipeSegmentTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcPointOnSurface
+    struct IfcPointOnSurface : IfcPoint, ObjectHelper<IfcPointOnSurface,3> {
+		Lazy< IfcSurface > BasisSurface;
+		IfcParameterValue::Out PointParameterU;
+		IfcParameterValue::Out PointParameterV;
+    };
+
+    // C++ wrapper for IfcAsset
+    struct IfcAsset : IfcGroup, ObjectHelper<IfcAsset,9> {
+		IfcIdentifier::Out AssetID;
+		Lazy< NotImplemented > OriginalValue;
+		Lazy< NotImplemented > CurrentValue;
+		Lazy< NotImplemented > TotalReplacementCost;
+		IfcActorSelect::Out Owner;
+		IfcActorSelect::Out User;
+		Lazy< NotImplemented > ResponsiblePerson;
+		Lazy< NotImplemented > IncorporationDate;
+		Lazy< NotImplemented > DepreciatedValue;
+    };
+
+    // C++ wrapper for IfcLightSourcePositional
+    struct IfcLightSourcePositional : IfcLightSource, ObjectHelper<IfcLightSourcePositional,5> {
+		Lazy< IfcCartesianPoint > Position;
+		IfcPositiveLengthMeasure::Out Radius;
+		IfcReal::Out ConstantAttenuation;
+		IfcReal::Out DistanceAttenuation;
+		IfcReal::Out QuadricAttenuation;
+    };
+
+    // C++ wrapper for IfcProjectionCurve
+    struct IfcProjectionCurve : IfcAnnotationCurveOccurrence, ObjectHelper<IfcProjectionCurve,0> {
+
+    };
+
+    // C++ wrapper for IfcFillAreaStyleTiles
+    struct IfcFillAreaStyleTiles : IfcGeometricRepresentationItem, ObjectHelper<IfcFillAreaStyleTiles,3> {
+		Lazy< IfcOneDirectionRepeatFactor > TilingPattern;
+		ListOf< IfcFillAreaStyleTileShapeSelect, 1, 0 >::Out Tiles;
+		IfcPositiveRatioMeasure::Out TilingScale;
+    };
+
+    // C++ wrapper for IfcElectricMotorType
+    struct IfcElectricMotorType : IfcEnergyConversionDeviceType, ObjectHelper<IfcElectricMotorType,1> {
+		IfcElectricMotorTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcTendon
+    struct IfcTendon : IfcReinforcingElement, ObjectHelper<IfcTendon,8> {
+		IfcTendonTypeEnum::Out PredefinedType;
+		IfcPositiveLengthMeasure::Out NominalDiameter;
+		IfcAreaMeasure::Out CrossSectionArea;
+		Maybe< IfcForceMeasure::Out > TensionForce;
+		Maybe< IfcPressureMeasure::Out > PreStress;
+		Maybe< IfcNormalisedRatioMeasure::Out > FrictionCoefficient;
+		Maybe< IfcPositiveLengthMeasure::Out > AnchorageSlip;
+		Maybe< IfcPositiveLengthMeasure::Out > MinCurvatureRadius;
+    };
+
+    // C++ wrapper for IfcDistributionChamberElementType
+    struct IfcDistributionChamberElementType : IfcDistributionFlowElementType, ObjectHelper<IfcDistributionChamberElementType,1> {
+		IfcDistributionChamberElementTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcMemberType
+    struct IfcMemberType : IfcBuildingElementType, ObjectHelper<IfcMemberType,1> {
+		IfcMemberTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcStructuralLinearAction
+    struct IfcStructuralLinearAction : IfcStructuralAction, ObjectHelper<IfcStructuralLinearAction,1> {
+		IfcProjectedOrTrueLengthEnum::Out ProjectedOrTrue;
+    };
+
+    // C++ wrapper for IfcStructuralLinearActionVarying
+    struct IfcStructuralLinearActionVarying : IfcStructuralLinearAction, ObjectHelper<IfcStructuralLinearActionVarying,2> {
+		Lazy< NotImplemented > VaryingAppliedLoadLocation;
+		ListOf< Lazy< NotImplemented >, 1, 0 > SubsequentAppliedLoads;
+    };
+
+    // C++ wrapper for IfcProductDefinitionShape
+    struct IfcProductDefinitionShape : IfcProductRepresentation, ObjectHelper<IfcProductDefinitionShape,0> {
+
+    };
+
+    // C++ wrapper for IfcFastener
+    struct IfcFastener : IfcElementComponent, ObjectHelper<IfcFastener,0> {
+
+    };
+
+    // C++ wrapper for IfcMechanicalFastener
+    struct IfcMechanicalFastener : IfcFastener, ObjectHelper<IfcMechanicalFastener,2> {
+		Maybe< IfcPositiveLengthMeasure::Out > NominalDiameter;
+		Maybe< IfcPositiveLengthMeasure::Out > NominalLength;
+    };
+
+    // C++ wrapper for IfcEvaporatorType
+    struct IfcEvaporatorType : IfcEnergyConversionDeviceType, ObjectHelper<IfcEvaporatorType,1> {
+		IfcEvaporatorTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcDiscreteAccessoryType
+    struct IfcDiscreteAccessoryType : IfcElementComponentType, ObjectHelper<IfcDiscreteAccessoryType,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuralCurveConnection
+    struct IfcStructuralCurveConnection : IfcStructuralConnection, ObjectHelper<IfcStructuralCurveConnection,0> {
+
+    };
+
+    // C++ wrapper for IfcProjectionElement
+    struct IfcProjectionElement : IfcFeatureElementAddition, ObjectHelper<IfcProjectionElement,0> {
+
+    };
+
+    // C++ wrapper for IfcCoveringType
+    struct IfcCoveringType : IfcBuildingElementType, ObjectHelper<IfcCoveringType,1> {
+		IfcCoveringTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcPumpType
+    struct IfcPumpType : IfcFlowMovingDeviceType, ObjectHelper<IfcPumpType,1> {
+		IfcPumpTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcPile
+    struct IfcPile : IfcBuildingElement, ObjectHelper<IfcPile,2> {
+		IfcPileTypeEnum::Out PredefinedType;
+		Maybe< IfcPileConstructionEnum::Out > ConstructionType;
+    };
+
+    // C++ wrapper for IfcUnitAssignment
+    struct IfcUnitAssignment :  ObjectHelper<IfcUnitAssignment,1> {
+		ListOf< IfcUnit, 1, 0 >::Out Units;
+    };
+
+    // C++ wrapper for IfcBoundingBox
+    struct IfcBoundingBox : IfcGeometricRepresentationItem, ObjectHelper<IfcBoundingBox,4> {
+		Lazy< IfcCartesianPoint > Corner;
+		IfcPositiveLengthMeasure::Out XDim;
+		IfcPositiveLengthMeasure::Out YDim;
+		IfcPositiveLengthMeasure::Out ZDim;
+    };
+
+    // C++ wrapper for IfcShellBasedSurfaceModel
+    struct IfcShellBasedSurfaceModel : IfcGeometricRepresentationItem, ObjectHelper<IfcShellBasedSurfaceModel,1> {
+		ListOf< IfcShell, 1, 0 >::Out SbsmBoundary;
+    };
+
+    // C++ wrapper for IfcFacetedBrep
+    struct IfcFacetedBrep : IfcManifoldSolidBrep, ObjectHelper<IfcFacetedBrep,0> {
+
+    };
+
+    // C++ wrapper for IfcTextLiteralWithExtent
+    struct IfcTextLiteralWithExtent : IfcTextLiteral, ObjectHelper<IfcTextLiteralWithExtent,2> {
+		Lazy< IfcPlanarExtent > Extent;
+		IfcBoxAlignment::Out BoxAlignment;
+    };
+
+    // C++ wrapper for IfcElectricApplianceType
+    struct IfcElectricApplianceType : IfcFlowTerminalType, ObjectHelper<IfcElectricApplianceType,1> {
+		IfcElectricApplianceTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcTrapeziumProfileDef
+    struct IfcTrapeziumProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcTrapeziumProfileDef,4> {
+		IfcPositiveLengthMeasure::Out BottomXDim;
+		IfcPositiveLengthMeasure::Out TopXDim;
+		IfcPositiveLengthMeasure::Out YDim;
+		IfcLengthMeasure::Out TopXOffset;
+    };
+
+    // C++ wrapper for IfcRelContainedInSpatialStructure
+    struct IfcRelContainedInSpatialStructure : IfcRelConnects, ObjectHelper<IfcRelContainedInSpatialStructure,2> {
+		ListOf< Lazy< IfcProduct >, 1, 0 > RelatedElements;
+		Lazy< IfcSpatialStructureElement > RelatingStructure;
+    };
+
+    // C++ wrapper for IfcEdgeLoop
+    struct IfcEdgeLoop : IfcLoop, ObjectHelper<IfcEdgeLoop,1> {
+		ListOf< Lazy< IfcOrientedEdge >, 1, 0 > EdgeList;
+    };
+
+    // C++ wrapper for IfcProject
+    struct IfcProject : IfcObject, ObjectHelper<IfcProject,4> {
+		Maybe< IfcLabel::Out > LongName;
+		Maybe< IfcLabel::Out > Phase;
+		ListOf< Lazy< IfcRepresentationContext >, 1, 0 > RepresentationContexts;
+		Lazy< IfcUnitAssignment > UnitsInContext;
+    };
+
+    // C++ wrapper for IfcCartesianPoint
+    struct IfcCartesianPoint : IfcPoint, ObjectHelper<IfcCartesianPoint,1> {
+		ListOf< IfcLengthMeasure, 1, 3 >::Out Coordinates;
+    };
+
+    // C++ wrapper for IfcCurveBoundedPlane
+    struct IfcCurveBoundedPlane : IfcBoundedSurface, ObjectHelper<IfcCurveBoundedPlane,3> {
+		Lazy< IfcPlane > BasisSurface;
+		Lazy< IfcCurve > OuterBoundary;
+		ListOf< Lazy< IfcCurve >, 0, 0 > InnerBoundaries;
+    };
+
+    // C++ wrapper for IfcWallType
+    struct IfcWallType : IfcBuildingElementType, ObjectHelper<IfcWallType,1> {
+		IfcWallTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcFillAreaStyleHatching
+    struct IfcFillAreaStyleHatching : IfcGeometricRepresentationItem, ObjectHelper<IfcFillAreaStyleHatching,5> {
+		Lazy< NotImplemented > HatchLineAppearance;
+		IfcHatchLineDistanceSelect::Out StartOfNextHatchLine;
+		Maybe< Lazy< IfcCartesianPoint > > PointOfReferenceHatchLine;
+		Maybe< Lazy< IfcCartesianPoint > > PatternStart;
+		IfcPlaneAngleMeasure::Out HatchLineAngle;
+    };
+
+    // C++ wrapper for IfcEquipmentStandard
+    struct IfcEquipmentStandard : IfcControl, ObjectHelper<IfcEquipmentStandard,0> {
+
+    };
+
+    // C++ wrapper for IfcDiameterDimension
+    struct IfcDiameterDimension : IfcDimensionCurveDirectedCallout, ObjectHelper<IfcDiameterDimension,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuralLoadGroup
+    struct IfcStructuralLoadGroup : IfcGroup, ObjectHelper<IfcStructuralLoadGroup,5> {
+		IfcLoadGroupTypeEnum::Out PredefinedType;
+		IfcActionTypeEnum::Out ActionType;
+		IfcActionSourceTypeEnum::Out ActionSource;
+		Maybe< IfcPositiveRatioMeasure::Out > Coefficient;
+		Maybe< IfcLabel::Out > Purpose;
+    };
+
+    // C++ wrapper for IfcConstructionMaterialResource
+    struct IfcConstructionMaterialResource : IfcConstructionResource, ObjectHelper<IfcConstructionMaterialResource,2> {
+		Maybe< ListOf< IfcActorSelect, 1, 0 >::Out > Suppliers;
+		Maybe< IfcRatioMeasure::Out > UsageRatio;
+    };
+
+    // C++ wrapper for IfcRelAggregates
+    struct IfcRelAggregates : IfcRelDecomposes, ObjectHelper<IfcRelAggregates,0> {
+
+    };
+
+    // C++ wrapper for IfcBoilerType
+    struct IfcBoilerType : IfcEnergyConversionDeviceType, ObjectHelper<IfcBoilerType,1> {
+		IfcBoilerTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcColourSpecification
+    struct IfcColourSpecification :  ObjectHelper<IfcColourSpecification,1> {
+		Maybe< IfcLabel::Out > Name;
+    };
+
+    // C++ wrapper for IfcColourRgb
+    struct IfcColourRgb : IfcColourSpecification, ObjectHelper<IfcColourRgb,3> {
+		IfcNormalisedRatioMeasure::Out Red;
+		IfcNormalisedRatioMeasure::Out Green;
+		IfcNormalisedRatioMeasure::Out Blue;
+    };
+
+    // C++ wrapper for IfcDoorStyle
+    struct IfcDoorStyle : IfcTypeProduct, ObjectHelper<IfcDoorStyle,4> {
+		IfcDoorStyleOperationEnum::Out OperationType;
+		IfcDoorStyleConstructionEnum::Out ConstructionType;
+		BOOLEAN::Out ParameterTakesPrecedence;
+		BOOLEAN::Out Sizeable;
+    };
+
+    // C++ wrapper for IfcDuctSilencerType
+    struct IfcDuctSilencerType : IfcFlowTreatmentDeviceType, ObjectHelper<IfcDuctSilencerType,1> {
+		IfcDuctSilencerTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcLightSourceGoniometric
+    struct IfcLightSourceGoniometric : IfcLightSource, ObjectHelper<IfcLightSourceGoniometric,6> {
+		Lazy< IfcAxis2Placement3D > Position;
+		Maybe< Lazy< IfcColourRgb > > ColourAppearance;
+		IfcThermodynamicTemperatureMeasure::Out ColourTemperature;
+		IfcLuminousFluxMeasure::Out LuminousFlux;
+		IfcLightEmissionSourceEnum::Out LightEmissionSource;
+		IfcLightDistributionDataSourceSelect::Out LightDistributionDataSource;
+    };
+
+    // C++ wrapper for IfcActuatorType
+    struct IfcActuatorType : IfcDistributionControlElementType, ObjectHelper<IfcActuatorType,1> {
+		IfcActuatorTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcSensorType
+    struct IfcSensorType : IfcDistributionControlElementType, ObjectHelper<IfcSensorType,1> {
+		IfcSensorTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcAirTerminalBoxType
+    struct IfcAirTerminalBoxType : IfcFlowControllerType, ObjectHelper<IfcAirTerminalBoxType,1> {
+		IfcAirTerminalBoxTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcAnnotationSurfaceOccurrence
+    struct IfcAnnotationSurfaceOccurrence : IfcAnnotationOccurrence, ObjectHelper<IfcAnnotationSurfaceOccurrence,0> {
+
+    };
+
+    // C++ wrapper for IfcZShapeProfileDef
+    struct IfcZShapeProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcZShapeProfileDef,6> {
+		IfcPositiveLengthMeasure::Out Depth;
+		IfcPositiveLengthMeasure::Out FlangeWidth;
+		IfcPositiveLengthMeasure::Out WebThickness;
+		IfcPositiveLengthMeasure::Out FlangeThickness;
+		Maybe< IfcPositiveLengthMeasure::Out > FilletRadius;
+		Maybe< IfcPositiveLengthMeasure::Out > EdgeRadius;
+    };
+
+    // C++ wrapper for IfcRationalBezierCurve
+    struct IfcRationalBezierCurve : IfcBezierCurve, ObjectHelper<IfcRationalBezierCurve,1> {
+		ListOf< REAL, 2, 0 >::Out WeightsData;
+    };
+
+    // C++ wrapper for IfcCartesianTransformationOperator2D
+    struct IfcCartesianTransformationOperator2D : IfcCartesianTransformationOperator, ObjectHelper<IfcCartesianTransformationOperator2D,0> {
+
+    };
+
+    // C++ wrapper for IfcCartesianTransformationOperator2DnonUniform
+    struct IfcCartesianTransformationOperator2DnonUniform : IfcCartesianTransformationOperator2D, ObjectHelper<IfcCartesianTransformationOperator2DnonUniform,1> {
+		Maybe< REAL::Out > Scale2;
+    };
+
+    // C++ wrapper for IfcMove
+    struct IfcMove : IfcTask, ObjectHelper<IfcMove,3> {
+		Lazy< IfcSpatialStructureElement > MoveFrom;
+		Lazy< IfcSpatialStructureElement > MoveTo;
+		Maybe< ListOf< IfcText, 1, 0 >::Out > PunchList;
+    };
+
+    // C++ wrapper for IfcCableCarrierSegmentType
+    struct IfcCableCarrierSegmentType : IfcFlowSegmentType, ObjectHelper<IfcCableCarrierSegmentType,1> {
+		IfcCableCarrierSegmentTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcElectricalElement
+    struct IfcElectricalElement : IfcElement, ObjectHelper<IfcElectricalElement,0> {
+
+    };
+
+    // C++ wrapper for IfcChillerType
+    struct IfcChillerType : IfcEnergyConversionDeviceType, ObjectHelper<IfcChillerType,1> {
+		IfcChillerTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcReinforcingBar
+    struct IfcReinforcingBar : IfcReinforcingElement, ObjectHelper<IfcReinforcingBar,5> {
+		IfcPositiveLengthMeasure::Out NominalDiameter;
+		IfcAreaMeasure::Out CrossSectionArea;
+		Maybe< IfcPositiveLengthMeasure::Out > BarLength;
+		IfcReinforcingBarRoleEnum::Out BarRole;
+		Maybe< IfcReinforcingBarSurfaceEnum::Out > BarSurface;
+    };
+
+    // C++ wrapper for IfcCShapeProfileDef
+    struct IfcCShapeProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcCShapeProfileDef,6> {
+		IfcPositiveLengthMeasure::Out Depth;
+		IfcPositiveLengthMeasure::Out Width;
+		IfcPositiveLengthMeasure::Out WallThickness;
+		IfcPositiveLengthMeasure::Out Girth;
+		Maybe< IfcPositiveLengthMeasure::Out > InternalFilletRadius;
+		Maybe< IfcPositiveLengthMeasure::Out > CentreOfGravityInX;
+    };
+
+    // C++ wrapper for IfcPermit
+    struct IfcPermit : IfcControl, ObjectHelper<IfcPermit,1> {
+		IfcIdentifier::Out PermitID;
+    };
+
+    // C++ wrapper for IfcSlabType
+    struct IfcSlabType : IfcBuildingElementType, ObjectHelper<IfcSlabType,1> {
+		IfcSlabTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcLampType
+    struct IfcLampType : IfcFlowTerminalType, ObjectHelper<IfcLampType,1> {
+		IfcLampTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcPlanarExtent
+    struct IfcPlanarExtent : IfcGeometricRepresentationItem, ObjectHelper<IfcPlanarExtent,2> {
+		IfcLengthMeasure::Out SizeInX;
+		IfcLengthMeasure::Out SizeInY;
+    };
+
+    // C++ wrapper for IfcAlarmType
+    struct IfcAlarmType : IfcDistributionControlElementType, ObjectHelper<IfcAlarmType,1> {
+		IfcAlarmTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcElectricFlowStorageDeviceType
+    struct IfcElectricFlowStorageDeviceType : IfcFlowStorageDeviceType, ObjectHelper<IfcElectricFlowStorageDeviceType,1> {
+		IfcElectricFlowStorageDeviceTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcEquipmentElement
+    struct IfcEquipmentElement : IfcElement, ObjectHelper<IfcEquipmentElement,0> {
+
+    };
+
+    // C++ wrapper for IfcLightFixtureType
+    struct IfcLightFixtureType : IfcFlowTerminalType, ObjectHelper<IfcLightFixtureType,1> {
+		IfcLightFixtureTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcCurtainWall
+    struct IfcCurtainWall : IfcBuildingElement, ObjectHelper<IfcCurtainWall,0> {
+
+    };
+
+    // C++ wrapper for IfcSlab
+    struct IfcSlab : IfcBuildingElement, ObjectHelper<IfcSlab,1> {
+		Maybe< IfcSlabTypeEnum::Out > PredefinedType;
+    };
+
+    // C++ wrapper for IfcCurtainWallType
+    struct IfcCurtainWallType : IfcBuildingElementType, ObjectHelper<IfcCurtainWallType,1> {
+		IfcCurtainWallTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcOutletType
+    struct IfcOutletType : IfcFlowTerminalType, ObjectHelper<IfcOutletType,1> {
+		IfcOutletTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcCompressorType
+    struct IfcCompressorType : IfcFlowMovingDeviceType, ObjectHelper<IfcCompressorType,1> {
+		IfcCompressorTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcCraneRailAShapeProfileDef
+    struct IfcCraneRailAShapeProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcCraneRailAShapeProfileDef,12> {
+		IfcPositiveLengthMeasure::Out OverallHeight;
+		IfcPositiveLengthMeasure::Out BaseWidth2;
+		Maybe< IfcPositiveLengthMeasure::Out > Radius;
+		IfcPositiveLengthMeasure::Out HeadWidth;
+		IfcPositiveLengthMeasure::Out HeadDepth2;
+		IfcPositiveLengthMeasure::Out HeadDepth3;
+		IfcPositiveLengthMeasure::Out WebThickness;
+		IfcPositiveLengthMeasure::Out BaseWidth4;
+		IfcPositiveLengthMeasure::Out BaseDepth1;
+		IfcPositiveLengthMeasure::Out BaseDepth2;
+		IfcPositiveLengthMeasure::Out BaseDepth3;
+		Maybe< IfcPositiveLengthMeasure::Out > CentreOfGravityInY;
+    };
+
+    // C++ wrapper for IfcFlowSegment
+    struct IfcFlowSegment : IfcDistributionFlowElement, ObjectHelper<IfcFlowSegment,0> {
+
+    };
+
+    // C++ wrapper for IfcSectionedSpine
+    struct IfcSectionedSpine : IfcGeometricRepresentationItem, ObjectHelper<IfcSectionedSpine,3> {
+		Lazy< IfcCompositeCurve > SpineCurve;
+		ListOf< Lazy< IfcProfileDef >, 2, 0 > CrossSections;
+		ListOf< Lazy< IfcAxis2Placement3D >, 2, 0 > CrossSectionPositions;
+    };
+
+    // C++ wrapper for IfcElectricTimeControlType
+    struct IfcElectricTimeControlType : IfcFlowControllerType, ObjectHelper<IfcElectricTimeControlType,1> {
+		IfcElectricTimeControlTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcFaceSurface
+    struct IfcFaceSurface : IfcFace, ObjectHelper<IfcFaceSurface,2> {
+		Lazy< IfcSurface > FaceSurface;
+		BOOLEAN::Out SameSense;
+    };
+
+    // C++ wrapper for IfcMotorConnectionType
+    struct IfcMotorConnectionType : IfcEnergyConversionDeviceType, ObjectHelper<IfcMotorConnectionType,1> {
+		IfcMotorConnectionTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcFlowFitting
+    struct IfcFlowFitting : IfcDistributionFlowElement, ObjectHelper<IfcFlowFitting,0> {
+
+    };
+
+    // C++ wrapper for IfcPointOnCurve
+    struct IfcPointOnCurve : IfcPoint, ObjectHelper<IfcPointOnCurve,2> {
+		Lazy< IfcCurve > BasisCurve;
+		IfcParameterValue::Out PointParameter;
+    };
+
+    // C++ wrapper for IfcTransportElementType
+    struct IfcTransportElementType : IfcElementType, ObjectHelper<IfcTransportElementType,1> {
+		IfcTransportElementTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcCableSegmentType
+    struct IfcCableSegmentType : IfcFlowSegmentType, ObjectHelper<IfcCableSegmentType,1> {
+		IfcCableSegmentTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcAnnotationSurface
+    struct IfcAnnotationSurface : IfcGeometricRepresentationItem, ObjectHelper<IfcAnnotationSurface,2> {
+		Lazy< IfcGeometricRepresentationItem > Item;
+		Maybe< Lazy< NotImplemented > > TextureCoordinates;
+    };
+
+    // C++ wrapper for IfcCompositeCurveSegment
+    struct IfcCompositeCurveSegment : IfcGeometricRepresentationItem, ObjectHelper<IfcCompositeCurveSegment,3> {
+		IfcTransitionCode::Out Transition;
+		BOOLEAN::Out SameSense;
+		Lazy< IfcCurve > ParentCurve;
+    };
+
+    // C++ wrapper for IfcServiceLife
+    struct IfcServiceLife : IfcControl, ObjectHelper<IfcServiceLife,2> {
+		IfcServiceLifeTypeEnum::Out ServiceLifeType;
+		IfcTimeMeasure::Out ServiceLifeDuration;
+    };
+
+    // C++ wrapper for IfcPlateType
+    struct IfcPlateType : IfcBuildingElementType, ObjectHelper<IfcPlateType,1> {
+		IfcPlateTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcVibrationIsolatorType
+    struct IfcVibrationIsolatorType : IfcDiscreteAccessoryType, ObjectHelper<IfcVibrationIsolatorType,1> {
+		IfcVibrationIsolatorTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcTrimmedCurve
+    struct IfcTrimmedCurve : IfcBoundedCurve, ObjectHelper<IfcTrimmedCurve,5> {
+		Lazy< IfcCurve > BasisCurve;
+		ListOf< IfcTrimmingSelect, 1, 2 >::Out Trim1;
+		ListOf< IfcTrimmingSelect, 1, 2 >::Out Trim2;
+		BOOLEAN::Out SenseAgreement;
+		IfcTrimmingPreference::Out MasterRepresentation;
+    };
+
+    // C++ wrapper for IfcMappedItem
+    struct IfcMappedItem : IfcRepresentationItem, ObjectHelper<IfcMappedItem,2> {
+		Lazy< IfcRepresentationMap > MappingSource;
+		Lazy< IfcCartesianTransformationOperator > MappingTarget;
+    };
+
+    // C++ wrapper for IfcDirection
+    struct IfcDirection : IfcGeometricRepresentationItem, ObjectHelper<IfcDirection,1> {
+		ListOf< REAL, 2, 3 >::Out DirectionRatios;
+    };
+
+    // C++ wrapper for IfcBlock
+    struct IfcBlock : IfcCsgPrimitive3D, ObjectHelper<IfcBlock,3> {
+		IfcPositiveLengthMeasure::Out XLength;
+		IfcPositiveLengthMeasure::Out YLength;
+		IfcPositiveLengthMeasure::Out ZLength;
+    };
+
+    // C++ wrapper for IfcProjectOrderRecord
+    struct IfcProjectOrderRecord : IfcControl, ObjectHelper<IfcProjectOrderRecord,2> {
+		ListOf< Lazy< NotImplemented >, 1, 0 > Records;
+		IfcProjectOrderRecordTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcFlowMeterType
+    struct IfcFlowMeterType : IfcFlowControllerType, ObjectHelper<IfcFlowMeterType,1> {
+		IfcFlowMeterTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcControllerType
+    struct IfcControllerType : IfcDistributionControlElementType, ObjectHelper<IfcControllerType,1> {
+		IfcControllerTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcBeam
+    struct IfcBeam : IfcBuildingElement, ObjectHelper<IfcBeam,0> {
+
+    };
+
+    // C++ wrapper for IfcArbitraryOpenProfileDef
+    struct IfcArbitraryOpenProfileDef : IfcProfileDef, ObjectHelper<IfcArbitraryOpenProfileDef,1> {
+		Lazy< IfcBoundedCurve > Curve;
+    };
+
+    // C++ wrapper for IfcCenterLineProfileDef
+    struct IfcCenterLineProfileDef : IfcArbitraryOpenProfileDef, ObjectHelper<IfcCenterLineProfileDef,1> {
+		IfcPositiveLengthMeasure::Out Thickness;
+    };
+
+    // C++ wrapper for IfcTimeSeriesSchedule
+    struct IfcTimeSeriesSchedule : IfcControl, ObjectHelper<IfcTimeSeriesSchedule,3> {
+		Maybe< ListOf< IfcDateTimeSelect, 1, 0 >::Out > ApplicableDates;
+		IfcTimeSeriesScheduleTypeEnum::Out TimeSeriesScheduleType;
+		Lazy< NotImplemented > TimeSeries;
+    };
+
+    // C++ wrapper for IfcRoundedEdgeFeature
+    struct IfcRoundedEdgeFeature : IfcEdgeFeature, ObjectHelper<IfcRoundedEdgeFeature,1> {
+		Maybe< IfcPositiveLengthMeasure::Out > Radius;
+    };
+
+    // C++ wrapper for IfcIShapeProfileDef
+    struct IfcIShapeProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcIShapeProfileDef,5> {
+		IfcPositiveLengthMeasure::Out OverallWidth;
+		IfcPositiveLengthMeasure::Out OverallDepth;
+		IfcPositiveLengthMeasure::Out WebThickness;
+		IfcPositiveLengthMeasure::Out FlangeThickness;
+		Maybe< IfcPositiveLengthMeasure::Out > FilletRadius;
+    };
+
+    // C++ wrapper for IfcSpaceHeaterType
+    struct IfcSpaceHeaterType : IfcEnergyConversionDeviceType, ObjectHelper<IfcSpaceHeaterType,1> {
+		IfcSpaceHeaterTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcFlowStorageDevice
+    struct IfcFlowStorageDevice : IfcDistributionFlowElement, ObjectHelper<IfcFlowStorageDevice,0> {
+
+    };
+
+    // C++ wrapper for IfcRevolvedAreaSolid
+    struct IfcRevolvedAreaSolid : IfcSweptAreaSolid, ObjectHelper<IfcRevolvedAreaSolid,2> {
+		Lazy< IfcAxis1Placement > Axis;
+		IfcPlaneAngleMeasure::Out Angle;
+    };
+
+    // C++ wrapper for IfcDoor
+    struct IfcDoor : IfcBuildingElement, ObjectHelper<IfcDoor,2> {
+		Maybe< IfcPositiveLengthMeasure::Out > OverallHeight;
+		Maybe< IfcPositiveLengthMeasure::Out > OverallWidth;
+    };
+
+    // C++ wrapper for IfcEllipse
+    struct IfcEllipse : IfcConic, ObjectHelper<IfcEllipse,2> {
+		IfcPositiveLengthMeasure::Out SemiAxis1;
+		IfcPositiveLengthMeasure::Out SemiAxis2;
+    };
+
+    // C++ wrapper for IfcTubeBundleType
+    struct IfcTubeBundleType : IfcEnergyConversionDeviceType, ObjectHelper<IfcTubeBundleType,1> {
+		IfcTubeBundleTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcAngularDimension
+    struct IfcAngularDimension : IfcDimensionCurveDirectedCallout, ObjectHelper<IfcAngularDimension,0> {
+
+    };
+
+    // C++ wrapper for IfcFaceBasedSurfaceModel
+    struct IfcFaceBasedSurfaceModel : IfcGeometricRepresentationItem, ObjectHelper<IfcFaceBasedSurfaceModel,1> {
+		ListOf< Lazy< IfcConnectedFaceSet >, 1, 0 > FbsmFaces;
+    };
+
+    // C++ wrapper for IfcCraneRailFShapeProfileDef
+    struct IfcCraneRailFShapeProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcCraneRailFShapeProfileDef,9> {
+		IfcPositiveLengthMeasure::Out OverallHeight;
+		IfcPositiveLengthMeasure::Out HeadWidth;
+		Maybe< IfcPositiveLengthMeasure::Out > Radius;
+		IfcPositiveLengthMeasure::Out HeadDepth2;
+		IfcPositiveLengthMeasure::Out HeadDepth3;
+		IfcPositiveLengthMeasure::Out WebThickness;
+		IfcPositiveLengthMeasure::Out BaseDepth1;
+		IfcPositiveLengthMeasure::Out BaseDepth2;
+		Maybe< IfcPositiveLengthMeasure::Out > CentreOfGravityInY;
+    };
+
+    // C++ wrapper for IfcColumnType
+    struct IfcColumnType : IfcBuildingElementType, ObjectHelper<IfcColumnType,1> {
+		IfcColumnTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcTShapeProfileDef
+    struct IfcTShapeProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcTShapeProfileDef,10> {
+		IfcPositiveLengthMeasure::Out Depth;
+		IfcPositiveLengthMeasure::Out FlangeWidth;
+		IfcPositiveLengthMeasure::Out WebThickness;
+		IfcPositiveLengthMeasure::Out FlangeThickness;
+		Maybe< IfcPositiveLengthMeasure::Out > FilletRadius;
+		Maybe< IfcPositiveLengthMeasure::Out > FlangeEdgeRadius;
+		Maybe< IfcPositiveLengthMeasure::Out > WebEdgeRadius;
+		Maybe< IfcPlaneAngleMeasure::Out > WebSlope;
+		Maybe< IfcPlaneAngleMeasure::Out > FlangeSlope;
+		Maybe< IfcPositiveLengthMeasure::Out > CentreOfGravityInY;
+    };
+
+    // C++ wrapper for IfcEnergyConversionDevice
+    struct IfcEnergyConversionDevice : IfcDistributionFlowElement, ObjectHelper<IfcEnergyConversionDevice,0> {
+
+    };
+
+    // C++ wrapper for IfcWorkSchedule
+    struct IfcWorkSchedule : IfcWorkControl, ObjectHelper<IfcWorkSchedule,0> {
+
+    };
+
+    // C++ wrapper for IfcZone
+    struct IfcZone : IfcGroup, ObjectHelper<IfcZone,0> {
+
+    };
+
+    // C++ wrapper for IfcTransportElement
+    struct IfcTransportElement : IfcElement, ObjectHelper<IfcTransportElement,3> {
+		Maybe< IfcTransportElementTypeEnum::Out > OperationType;
+		Maybe< IfcMassMeasure::Out > CapacityByWeight;
+		Maybe< IfcCountMeasure::Out > CapacityByNumber;
+    };
+
+    // C++ wrapper for IfcGeometricRepresentationSubContext
+    struct IfcGeometricRepresentationSubContext : IfcGeometricRepresentationContext, ObjectHelper<IfcGeometricRepresentationSubContext,4> {
+		Lazy< IfcGeometricRepresentationContext > ParentContext;
+		Maybe< IfcPositiveRatioMeasure::Out > TargetScale;
+		IfcGeometricProjectionEnum::Out TargetView;
+		Maybe< IfcLabel::Out > UserDefinedTargetView;
+    };
+
+    // C++ wrapper for IfcLShapeProfileDef
+    struct IfcLShapeProfileDef : IfcParameterizedProfileDef, ObjectHelper<IfcLShapeProfileDef,8> {
+		IfcPositiveLengthMeasure::Out Depth;
+		Maybe< IfcPositiveLengthMeasure::Out > Width;
+		IfcPositiveLengthMeasure::Out Thickness;
+		Maybe< IfcPositiveLengthMeasure::Out > FilletRadius;
+		Maybe< IfcPositiveLengthMeasure::Out > EdgeRadius;
+		Maybe< IfcPlaneAngleMeasure::Out > LegSlope;
+		Maybe< IfcPositiveLengthMeasure::Out > CentreOfGravityInX;
+		Maybe< IfcPositiveLengthMeasure::Out > CentreOfGravityInY;
+    };
+
+    // C++ wrapper for IfcGeometricCurveSet
+    struct IfcGeometricCurveSet : IfcGeometricSet, ObjectHelper<IfcGeometricCurveSet,0> {
+
+    };
+
+    // C++ wrapper for IfcActor
+    struct IfcActor : IfcObject, ObjectHelper<IfcActor,1> {
+		IfcActorSelect::Out TheActor;
+    };
+
+    // C++ wrapper for IfcOccupant
+    struct IfcOccupant : IfcActor, ObjectHelper<IfcOccupant,1> {
+		IfcOccupantTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcBooleanClippingResult
+    struct IfcBooleanClippingResult : IfcBooleanResult, ObjectHelper<IfcBooleanClippingResult,0> {
+
+    };
+
+    // C++ wrapper for IfcAnnotationFillArea
+    struct IfcAnnotationFillArea : IfcGeometricRepresentationItem, ObjectHelper<IfcAnnotationFillArea,2> {
+		Lazy< IfcCurve > OuterBoundary;
+		Maybe< ListOf< Lazy< IfcCurve >, 1, 0 > > InnerBoundaries;
+    };
+
+    // C++ wrapper for IfcLightSourceSpot
+    struct IfcLightSourceSpot : IfcLightSourcePositional, ObjectHelper<IfcLightSourceSpot,4> {
+		Lazy< IfcDirection > Orientation;
+		Maybe< IfcReal::Out > ConcentrationExponent;
+		IfcPositivePlaneAngleMeasure::Out SpreadAngle;
+		IfcPositivePlaneAngleMeasure::Out BeamWidthAngle;
+    };
+
+    // C++ wrapper for IfcFireSuppressionTerminalType
+    struct IfcFireSuppressionTerminalType : IfcFlowTerminalType, ObjectHelper<IfcFireSuppressionTerminalType,1> {
+		IfcFireSuppressionTerminalTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcElectricGeneratorType
+    struct IfcElectricGeneratorType : IfcEnergyConversionDeviceType, ObjectHelper<IfcElectricGeneratorType,1> {
+		IfcElectricGeneratorTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcInventory
+    struct IfcInventory : IfcGroup, ObjectHelper<IfcInventory,6> {
+		IfcInventoryTypeEnum::Out InventoryType;
+		IfcActorSelect::Out Jurisdiction;
+		ListOf< Lazy< NotImplemented >, 1, 0 > ResponsiblePersons;
+		Lazy< NotImplemented > LastUpdateDate;
+		Maybe< Lazy< NotImplemented > > CurrentValue;
+		Maybe< Lazy< NotImplemented > > OriginalValue;
+    };
+
+    // C++ wrapper for IfcPolyline
+    struct IfcPolyline : IfcBoundedCurve, ObjectHelper<IfcPolyline,1> {
+		ListOf< Lazy< IfcCartesianPoint >, 2, 0 > Points;
+    };
+
+    // C++ wrapper for IfcBoxedHalfSpace
+    struct IfcBoxedHalfSpace : IfcHalfSpaceSolid, ObjectHelper<IfcBoxedHalfSpace,1> {
+		Lazy< IfcBoundingBox > Enclosure;
+    };
+
+    // C++ wrapper for IfcAirTerminalType
+    struct IfcAirTerminalType : IfcFlowTerminalType, ObjectHelper<IfcAirTerminalType,1> {
+		IfcAirTerminalTypeEnum::Out PredefinedType;
+    };
+
+    // C++ wrapper for IfcDistributionPort
+    struct IfcDistributionPort : IfcPort, ObjectHelper<IfcDistributionPort,1> {
+		Maybe< IfcFlowDirectionEnum::Out > FlowDirection;
+    };
+
+    // C++ wrapper for IfcCostItem
+    struct IfcCostItem : IfcControl, ObjectHelper<IfcCostItem,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuredDimensionCallout
+    struct IfcStructuredDimensionCallout : IfcDraughtingCallout, ObjectHelper<IfcStructuredDimensionCallout,0> {
+
+    };
+
+    // C++ wrapper for IfcStructuralResultGroup
+    struct IfcStructuralResultGroup : IfcGroup, ObjectHelper<IfcStructuralResultGroup,3> {
+		IfcAnalysisTheoryTypeEnum::Out TheoryType;
+		Maybe< Lazy< IfcStructuralLoadGroup > > ResultForLoadGroup;
+		BOOLEAN::Out IsLinear;
+    };
+
+    // C++ wrapper for IfcOrientedEdge
+    struct IfcOrientedEdge : IfcEdge, ObjectHelper<IfcOrientedEdge,2> {
+		Lazy< IfcEdge > EdgeElement;
+		BOOLEAN::Out Orientation;
+    };
+
+    // C++ wrapper for IfcCsgSolid
+    struct IfcCsgSolid : IfcSolidModel, ObjectHelper<IfcCsgSolid,1> {
+		IfcCsgSelect::Out TreeRootExpression;
+    };
+
+    // C++ wrapper for IfcPlanarBox
+    struct IfcPlanarBox : IfcPlanarExtent, ObjectHelper<IfcPlanarBox,1> {
+		IfcAxis2Placement::Out Placement;
+    };
+
+    // C++ wrapper for IfcMaterialDefinitionRepresentation
+    struct IfcMaterialDefinitionRepresentation : IfcProductRepresentation, ObjectHelper<IfcMaterialDefinitionRepresentation,1> {
+		Lazy< NotImplemented > RepresentedMaterial;
+    };
+
+    // C++ wrapper for IfcAsymmetricIShapeProfileDef
+    struct IfcAsymmetricIShapeProfileDef : IfcIShapeProfileDef, ObjectHelper<IfcAsymmetricIShapeProfileDef,4> {
+		IfcPositiveLengthMeasure::Out TopFlangeWidth;
+		Maybe< IfcPositiveLengthMeasure::Out > TopFlangeThickness;
+		Maybe< IfcPositiveLengthMeasure::Out > TopFlangeFilletRadius;
+		Maybe< IfcPositiveLengthMeasure::Out > CentreOfGravityInY;
+    };
+
+    // C++ wrapper for IfcRepresentationMap
+    struct IfcRepresentationMap :  ObjectHelper<IfcRepresentationMap,2> {
+		IfcAxis2Placement::Out MappingOrigin;
+		Lazy< IfcRepresentation > MappedRepresentation;
+    };
+
+	void GetSchema(EXPRESS::ConversionSchema& out);
+
+} //! IFC
+namespace STEP {
+
+	// ******************************************************************************
+	// Converter stubs
+	// ******************************************************************************
+	
+#define DECL_CONV_STUB(type) template <> size_t GenericFill<IFC::type>(const STEP::DB& db, const EXPRESS::LIST& params, IFC::type* in)
+	
+	DECL_CONV_STUB(IfcRoot);
+	DECL_CONV_STUB(IfcObjectDefinition);
+	DECL_CONV_STUB(IfcTypeObject);
+	DECL_CONV_STUB(IfcTypeProduct);
+	DECL_CONV_STUB(IfcElementType);
+	DECL_CONV_STUB(IfcFurnishingElementType);
+	DECL_CONV_STUB(IfcFurnitureType);
+	DECL_CONV_STUB(IfcObject);
+	DECL_CONV_STUB(IfcProduct);
+	DECL_CONV_STUB(IfcGrid);
+	DECL_CONV_STUB(IfcRepresentationItem);
+	DECL_CONV_STUB(IfcGeometricRepresentationItem);
+	DECL_CONV_STUB(IfcOneDirectionRepeatFactor);
+	DECL_CONV_STUB(IfcTwoDirectionRepeatFactor);
+	DECL_CONV_STUB(IfcElement);
+	DECL_CONV_STUB(IfcElementComponent);
+	DECL_CONV_STUB(IfcSpatialStructureElementType);
+	DECL_CONV_STUB(IfcControl);
+	DECL_CONV_STUB(IfcActionRequest);
+	DECL_CONV_STUB(IfcDistributionElementType);
+	DECL_CONV_STUB(IfcDistributionFlowElementType);
+	DECL_CONV_STUB(IfcEnergyConversionDeviceType);
+	DECL_CONV_STUB(IfcCooledBeamType);
+	DECL_CONV_STUB(IfcCsgPrimitive3D);
+	DECL_CONV_STUB(IfcRectangularPyramid);
+	DECL_CONV_STUB(IfcSurface);
+	DECL_CONV_STUB(IfcBoundedSurface);
+	DECL_CONV_STUB(IfcRectangularTrimmedSurface);
+	DECL_CONV_STUB(IfcGroup);
+	DECL_CONV_STUB(IfcRelationship);
+	DECL_CONV_STUB(IfcHalfSpaceSolid);
+	DECL_CONV_STUB(IfcPolygonalBoundedHalfSpace);
+	DECL_CONV_STUB(IfcAirToAirHeatRecoveryType);
+	DECL_CONV_STUB(IfcFlowFittingType);
+	DECL_CONV_STUB(IfcPipeFittingType);
+	DECL_CONV_STUB(IfcRepresentation);
+	DECL_CONV_STUB(IfcStyleModel);
+	DECL_CONV_STUB(IfcStyledRepresentation);
+	DECL_CONV_STUB(IfcBooleanResult);
+	DECL_CONV_STUB(IfcFeatureElement);
+	DECL_CONV_STUB(IfcFeatureElementSubtraction);
+	DECL_CONV_STUB(IfcOpeningElement);
+	DECL_CONV_STUB(IfcConditionCriterion);
+	DECL_CONV_STUB(IfcFlowTerminalType);
+	DECL_CONV_STUB(IfcFlowControllerType);
+	DECL_CONV_STUB(IfcSwitchingDeviceType);
+	DECL_CONV_STUB(IfcSystem);
+	DECL_CONV_STUB(IfcElectricalCircuit);
+	DECL_CONV_STUB(IfcUnitaryEquipmentType);
+	DECL_CONV_STUB(IfcPort);
+	DECL_CONV_STUB(IfcPlacement);
+	DECL_CONV_STUB(IfcProfileDef);
+	DECL_CONV_STUB(IfcArbitraryClosedProfileDef);
+	DECL_CONV_STUB(IfcCurve);
+	DECL_CONV_STUB(IfcConic);
+	DECL_CONV_STUB(IfcCircle);
+	DECL_CONV_STUB(IfcElementarySurface);
+	DECL_CONV_STUB(IfcPlane);
+	DECL_CONV_STUB(IfcCostSchedule);
+	DECL_CONV_STUB(IfcRightCircularCone);
+	DECL_CONV_STUB(IfcElementAssembly);
+	DECL_CONV_STUB(IfcBuildingElement);
+	DECL_CONV_STUB(IfcMember);
+	DECL_CONV_STUB(IfcBuildingElementProxy);
+	DECL_CONV_STUB(IfcStructuralActivity);
+	DECL_CONV_STUB(IfcStructuralAction);
+	DECL_CONV_STUB(IfcStructuralPlanarAction);
+	DECL_CONV_STUB(IfcTopologicalRepresentationItem);
+	DECL_CONV_STUB(IfcConnectedFaceSet);
+	DECL_CONV_STUB(IfcSweptSurface);
+	DECL_CONV_STUB(IfcSurfaceOfLinearExtrusion);
+	DECL_CONV_STUB(IfcArbitraryProfileDefWithVoids);
+	DECL_CONV_STUB(IfcProcess);
+	DECL_CONV_STUB(IfcProcedure);
+	DECL_CONV_STUB(IfcVector);
+	DECL_CONV_STUB(IfcFaceBound);
+	DECL_CONV_STUB(IfcFaceOuterBound);
+	DECL_CONV_STUB(IfcFeatureElementAddition);
+	DECL_CONV_STUB(IfcNamedUnit);
+	DECL_CONV_STUB(IfcHeatExchangerType);
+	DECL_CONV_STUB(IfcPresentationStyleAssignment);
+	DECL_CONV_STUB(IfcFlowTreatmentDeviceType);
+	DECL_CONV_STUB(IfcFilterType);
+	DECL_CONV_STUB(IfcResource);
+	DECL_CONV_STUB(IfcEvaporativeCoolerType);
+	DECL_CONV_STUB(IfcOffsetCurve2D);
+	DECL_CONV_STUB(IfcEdge);
+	DECL_CONV_STUB(IfcSubedge);
+	DECL_CONV_STUB(IfcProxy);
+	DECL_CONV_STUB(IfcLine);
+	DECL_CONV_STUB(IfcColumn);
+	DECL_CONV_STUB(IfcObjectPlacement);
+	DECL_CONV_STUB(IfcGridPlacement);
+	DECL_CONV_STUB(IfcDistributionControlElementType);
+	DECL_CONV_STUB(IfcRelConnects);
+	DECL_CONV_STUB(IfcAnnotation);
+	DECL_CONV_STUB(IfcPlate);
+	DECL_CONV_STUB(IfcSolidModel);
+	DECL_CONV_STUB(IfcManifoldSolidBrep);
+	DECL_CONV_STUB(IfcFlowStorageDeviceType);
+	DECL_CONV_STUB(IfcStructuralItem);
+	DECL_CONV_STUB(IfcStructuralMember);
+	DECL_CONV_STUB(IfcStructuralCurveMember);
+	DECL_CONV_STUB(IfcStructuralConnection);
+	DECL_CONV_STUB(IfcStructuralSurfaceConnection);
+	DECL_CONV_STUB(IfcCoilType);
+	DECL_CONV_STUB(IfcDuctFittingType);
+	DECL_CONV_STUB(IfcStyledItem);
+	DECL_CONV_STUB(IfcAnnotationOccurrence);
+	DECL_CONV_STUB(IfcAnnotationCurveOccurrence);
+	DECL_CONV_STUB(IfcDimensionCurve);
+	DECL_CONV_STUB(IfcBoundedCurve);
+	DECL_CONV_STUB(IfcAxis1Placement);
+	DECL_CONV_STUB(IfcStructuralPointAction);
+	DECL_CONV_STUB(IfcSpatialStructureElement);
+	DECL_CONV_STUB(IfcSpace);
+	DECL_CONV_STUB(IfcCoolingTowerType);
+	DECL_CONV_STUB(IfcFacetedBrepWithVoids);
+	DECL_CONV_STUB(IfcValveType);
+	DECL_CONV_STUB(IfcSystemFurnitureElementType);
+	DECL_CONV_STUB(IfcDiscreteAccessory);
+	DECL_CONV_STUB(IfcBuildingElementType);
+	DECL_CONV_STUB(IfcRailingType);
+	DECL_CONV_STUB(IfcGasTerminalType);
+	DECL_CONV_STUB(IfcSpaceProgram);
+	DECL_CONV_STUB(IfcCovering);
+	DECL_CONV_STUB(IfcPresentationStyle);
+	DECL_CONV_STUB(IfcElectricHeaterType);
+	DECL_CONV_STUB(IfcBuildingStorey);
+	DECL_CONV_STUB(IfcVertex);
+	DECL_CONV_STUB(IfcVertexPoint);
+	DECL_CONV_STUB(IfcFlowInstrumentType);
+	DECL_CONV_STUB(IfcParameterizedProfileDef);
+	DECL_CONV_STUB(IfcUShapeProfileDef);
+	DECL_CONV_STUB(IfcRamp);
+	DECL_CONV_STUB(IfcCompositeCurve);
+	DECL_CONV_STUB(IfcStructuralCurveMemberVarying);
+	DECL_CONV_STUB(IfcRampFlightType);
+	DECL_CONV_STUB(IfcDraughtingCallout);
+	DECL_CONV_STUB(IfcDimensionCurveDirectedCallout);
+	DECL_CONV_STUB(IfcRadiusDimension);
+	DECL_CONV_STUB(IfcEdgeFeature);
+	DECL_CONV_STUB(IfcSweptAreaSolid);
+	DECL_CONV_STUB(IfcExtrudedAreaSolid);
+	DECL_CONV_STUB(IfcAnnotationTextOccurrence);
+	DECL_CONV_STUB(IfcStair);
+	DECL_CONV_STUB(IfcFillAreaStyleTileSymbolWithStyle);
+	DECL_CONV_STUB(IfcAnnotationSymbolOccurrence);
+	DECL_CONV_STUB(IfcTerminatorSymbol);
+	DECL_CONV_STUB(IfcDimensionCurveTerminator);
+	DECL_CONV_STUB(IfcRectangleProfileDef);
+	DECL_CONV_STUB(IfcRectangleHollowProfileDef);
+	DECL_CONV_STUB(IfcLocalPlacement);
+	DECL_CONV_STUB(IfcTask);
+	DECL_CONV_STUB(IfcAnnotationFillAreaOccurrence);
+	DECL_CONV_STUB(IfcFace);
+	DECL_CONV_STUB(IfcFlowSegmentType);
+	DECL_CONV_STUB(IfcDuctSegmentType);
+	DECL_CONV_STUB(IfcConstructionResource);
+	DECL_CONV_STUB(IfcConstructionEquipmentResource);
+	DECL_CONV_STUB(IfcSanitaryTerminalType);
+	DECL_CONV_STUB(IfcCircleProfileDef);
+	DECL_CONV_STUB(IfcStructuralReaction);
+	DECL_CONV_STUB(IfcStructuralPointReaction);
+	DECL_CONV_STUB(IfcRailing);
+	DECL_CONV_STUB(IfcTextLiteral);
+	DECL_CONV_STUB(IfcCartesianTransformationOperator);
+	DECL_CONV_STUB(IfcLinearDimension);
+	DECL_CONV_STUB(IfcDamperType);
+	DECL_CONV_STUB(IfcSIUnit);
+	DECL_CONV_STUB(IfcDistributionElement);
+	DECL_CONV_STUB(IfcDistributionControlElement);
+	DECL_CONV_STUB(IfcTransformerType);
+	DECL_CONV_STUB(IfcLaborResource);
+	DECL_CONV_STUB(IfcFurnitureStandard);
+	DECL_CONV_STUB(IfcStairFlightType);
+	DECL_CONV_STUB(IfcWorkControl);
+	DECL_CONV_STUB(IfcWorkPlan);
+	DECL_CONV_STUB(IfcCondition);
+	DECL_CONV_STUB(IfcWindow);
+	DECL_CONV_STUB(IfcProtectiveDeviceType);
+	DECL_CONV_STUB(IfcJunctionBoxType);
+	DECL_CONV_STUB(IfcStructuralAnalysisModel);
+	DECL_CONV_STUB(IfcAxis2Placement2D);
+	DECL_CONV_STUB(IfcSpaceType);
+	DECL_CONV_STUB(IfcEllipseProfileDef);
+	DECL_CONV_STUB(IfcDistributionFlowElement);
+	DECL_CONV_STUB(IfcFlowMovingDevice);
+	DECL_CONV_STUB(IfcSurfaceStyleWithTextures);
+	DECL_CONV_STUB(IfcGeometricSet);
+	DECL_CONV_STUB(IfcProjectOrder);
+	DECL_CONV_STUB(IfcBSplineCurve);
+	DECL_CONV_STUB(IfcBezierCurve);
+	DECL_CONV_STUB(IfcStructuralPointConnection);
+	DECL_CONV_STUB(IfcFlowController);
+	DECL_CONV_STUB(IfcElectricDistributionPoint);
+	DECL_CONV_STUB(IfcSite);
+	DECL_CONV_STUB(IfcOffsetCurve3D);
+	DECL_CONV_STUB(IfcVirtualElement);
+	DECL_CONV_STUB(IfcConstructionProductResource);
+	DECL_CONV_STUB(IfcSurfaceCurveSweptAreaSolid);
+	DECL_CONV_STUB(IfcCartesianTransformationOperator3D);
+	DECL_CONV_STUB(IfcCartesianTransformationOperator3DnonUniform);
+	DECL_CONV_STUB(IfcCrewResource);
+	DECL_CONV_STUB(IfcStructuralSurfaceMember);
+	DECL_CONV_STUB(Ifc2DCompositeCurve);
+	DECL_CONV_STUB(IfcRepresentationContext);
+	DECL_CONV_STUB(IfcGeometricRepresentationContext);
+	DECL_CONV_STUB(IfcFlowTreatmentDevice);
+	DECL_CONV_STUB(IfcRightCircularCylinder);
+	DECL_CONV_STUB(IfcWasteTerminalType);
+	DECL_CONV_STUB(IfcBuildingElementComponent);
+	DECL_CONV_STUB(IfcBuildingElementPart);
+	DECL_CONV_STUB(IfcWall);
+	DECL_CONV_STUB(IfcWallStandardCase);
+	DECL_CONV_STUB(IfcPath);
+	DECL_CONV_STUB(IfcDefinedSymbol);
+	DECL_CONV_STUB(IfcStructuralSurfaceMemberVarying);
+	DECL_CONV_STUB(IfcPoint);
+	DECL_CONV_STUB(IfcSurfaceOfRevolution);
+	DECL_CONV_STUB(IfcFlowTerminal);
+	DECL_CONV_STUB(IfcFurnishingElement);
+	DECL_CONV_STUB(IfcSurfaceStyleShading);
+	DECL_CONV_STUB(IfcSurfaceStyleRendering);
+	DECL_CONV_STUB(IfcCircleHollowProfileDef);
+	DECL_CONV_STUB(IfcFlowMovingDeviceType);
+	DECL_CONV_STUB(IfcFanType);
+	DECL_CONV_STUB(IfcStructuralPlanarActionVarying);
+	DECL_CONV_STUB(IfcProductRepresentation);
+	DECL_CONV_STUB(IfcStackTerminalType);
+	DECL_CONV_STUB(IfcReinforcingElement);
+	DECL_CONV_STUB(IfcReinforcingMesh);
+	DECL_CONV_STUB(IfcOrderAction);
+	DECL_CONV_STUB(IfcLightSource);
+	DECL_CONV_STUB(IfcLightSourceDirectional);
+	DECL_CONV_STUB(IfcLoop);
+	DECL_CONV_STUB(IfcVertexLoop);
+	DECL_CONV_STUB(IfcChamferEdgeFeature);
+	DECL_CONV_STUB(IfcElementComponentType);
+	DECL_CONV_STUB(IfcFastenerType);
+	DECL_CONV_STUB(IfcMechanicalFastenerType);
+	DECL_CONV_STUB(IfcScheduleTimeControl);
+	DECL_CONV_STUB(IfcSurfaceStyle);
+	DECL_CONV_STUB(IfcOpenShell);
+	DECL_CONV_STUB(IfcSubContractResource);
+	DECL_CONV_STUB(IfcSweptDiskSolid);
+	DECL_CONV_STUB(IfcTankType);
+	DECL_CONV_STUB(IfcSphere);
+	DECL_CONV_STUB(IfcPolyLoop);
+	DECL_CONV_STUB(IfcCableCarrierFittingType);
+	DECL_CONV_STUB(IfcHumidifierType);
+	DECL_CONV_STUB(IfcPerformanceHistory);
+	DECL_CONV_STUB(IfcShapeModel);
+	DECL_CONV_STUB(IfcTopologyRepresentation);
+	DECL_CONV_STUB(IfcBuilding);
+	DECL_CONV_STUB(IfcRoundedRectangleProfileDef);
+	DECL_CONV_STUB(IfcStairFlight);
+	DECL_CONV_STUB(IfcDistributionChamberElement);
+	DECL_CONV_STUB(IfcShapeRepresentation);
+	DECL_CONV_STUB(IfcRampFlight);
+	DECL_CONV_STUB(IfcBeamType);
+	DECL_CONV_STUB(IfcRelDecomposes);
+	DECL_CONV_STUB(IfcRoof);
+	DECL_CONV_STUB(IfcFooting);
+	DECL_CONV_STUB(IfcLightSourceAmbient);
+	DECL_CONV_STUB(IfcWindowStyle);
+	DECL_CONV_STUB(IfcBuildingElementProxyType);
+	DECL_CONV_STUB(IfcAxis2Placement3D);
+	DECL_CONV_STUB(IfcEdgeCurve);
+	DECL_CONV_STUB(IfcClosedShell);
+	DECL_CONV_STUB(IfcTendonAnchor);
+	DECL_CONV_STUB(IfcCondenserType);
+	DECL_CONV_STUB(IfcPipeSegmentType);
+	DECL_CONV_STUB(IfcPointOnSurface);
+	DECL_CONV_STUB(IfcAsset);
+	DECL_CONV_STUB(IfcLightSourcePositional);
+	DECL_CONV_STUB(IfcProjectionCurve);
+	DECL_CONV_STUB(IfcFillAreaStyleTiles);
+	DECL_CONV_STUB(IfcElectricMotorType);
+	DECL_CONV_STUB(IfcTendon);
+	DECL_CONV_STUB(IfcDistributionChamberElementType);
+	DECL_CONV_STUB(IfcMemberType);
+	DECL_CONV_STUB(IfcStructuralLinearAction);
+	DECL_CONV_STUB(IfcStructuralLinearActionVarying);
+	DECL_CONV_STUB(IfcProductDefinitionShape);
+	DECL_CONV_STUB(IfcFastener);
+	DECL_CONV_STUB(IfcMechanicalFastener);
+	DECL_CONV_STUB(IfcEvaporatorType);
+	DECL_CONV_STUB(IfcDiscreteAccessoryType);
+	DECL_CONV_STUB(IfcStructuralCurveConnection);
+	DECL_CONV_STUB(IfcProjectionElement);
+	DECL_CONV_STUB(IfcCoveringType);
+	DECL_CONV_STUB(IfcPumpType);
+	DECL_CONV_STUB(IfcPile);
+	DECL_CONV_STUB(IfcUnitAssignment);
+	DECL_CONV_STUB(IfcBoundingBox);
+	DECL_CONV_STUB(IfcShellBasedSurfaceModel);
+	DECL_CONV_STUB(IfcFacetedBrep);
+	DECL_CONV_STUB(IfcTextLiteralWithExtent);
+	DECL_CONV_STUB(IfcElectricApplianceType);
+	DECL_CONV_STUB(IfcTrapeziumProfileDef);
+	DECL_CONV_STUB(IfcRelContainedInSpatialStructure);
+	DECL_CONV_STUB(IfcEdgeLoop);
+	DECL_CONV_STUB(IfcProject);
+	DECL_CONV_STUB(IfcCartesianPoint);
+	DECL_CONV_STUB(IfcCurveBoundedPlane);
+	DECL_CONV_STUB(IfcWallType);
+	DECL_CONV_STUB(IfcFillAreaStyleHatching);
+	DECL_CONV_STUB(IfcEquipmentStandard);
+	DECL_CONV_STUB(IfcDiameterDimension);
+	DECL_CONV_STUB(IfcStructuralLoadGroup);
+	DECL_CONV_STUB(IfcConstructionMaterialResource);
+	DECL_CONV_STUB(IfcRelAggregates);
+	DECL_CONV_STUB(IfcBoilerType);
+	DECL_CONV_STUB(IfcColourSpecification);
+	DECL_CONV_STUB(IfcColourRgb);
+	DECL_CONV_STUB(IfcDoorStyle);
+	DECL_CONV_STUB(IfcDuctSilencerType);
+	DECL_CONV_STUB(IfcLightSourceGoniometric);
+	DECL_CONV_STUB(IfcActuatorType);
+	DECL_CONV_STUB(IfcSensorType);
+	DECL_CONV_STUB(IfcAirTerminalBoxType);
+	DECL_CONV_STUB(IfcAnnotationSurfaceOccurrence);
+	DECL_CONV_STUB(IfcZShapeProfileDef);
+	DECL_CONV_STUB(IfcRationalBezierCurve);
+	DECL_CONV_STUB(IfcCartesianTransformationOperator2D);
+	DECL_CONV_STUB(IfcCartesianTransformationOperator2DnonUniform);
+	DECL_CONV_STUB(IfcMove);
+	DECL_CONV_STUB(IfcCableCarrierSegmentType);
+	DECL_CONV_STUB(IfcElectricalElement);
+	DECL_CONV_STUB(IfcChillerType);
+	DECL_CONV_STUB(IfcReinforcingBar);
+	DECL_CONV_STUB(IfcCShapeProfileDef);
+	DECL_CONV_STUB(IfcPermit);
+	DECL_CONV_STUB(IfcSlabType);
+	DECL_CONV_STUB(IfcLampType);
+	DECL_CONV_STUB(IfcPlanarExtent);
+	DECL_CONV_STUB(IfcAlarmType);
+	DECL_CONV_STUB(IfcElectricFlowStorageDeviceType);
+	DECL_CONV_STUB(IfcEquipmentElement);
+	DECL_CONV_STUB(IfcLightFixtureType);
+	DECL_CONV_STUB(IfcCurtainWall);
+	DECL_CONV_STUB(IfcSlab);
+	DECL_CONV_STUB(IfcCurtainWallType);
+	DECL_CONV_STUB(IfcOutletType);
+	DECL_CONV_STUB(IfcCompressorType);
+	DECL_CONV_STUB(IfcCraneRailAShapeProfileDef);
+	DECL_CONV_STUB(IfcFlowSegment);
+	DECL_CONV_STUB(IfcSectionedSpine);
+	DECL_CONV_STUB(IfcElectricTimeControlType);
+	DECL_CONV_STUB(IfcFaceSurface);
+	DECL_CONV_STUB(IfcMotorConnectionType);
+	DECL_CONV_STUB(IfcFlowFitting);
+	DECL_CONV_STUB(IfcPointOnCurve);
+	DECL_CONV_STUB(IfcTransportElementType);
+	DECL_CONV_STUB(IfcCableSegmentType);
+	DECL_CONV_STUB(IfcAnnotationSurface);
+	DECL_CONV_STUB(IfcCompositeCurveSegment);
+	DECL_CONV_STUB(IfcServiceLife);
+	DECL_CONV_STUB(IfcPlateType);
+	DECL_CONV_STUB(IfcVibrationIsolatorType);
+	DECL_CONV_STUB(IfcTrimmedCurve);
+	DECL_CONV_STUB(IfcMappedItem);
+	DECL_CONV_STUB(IfcDirection);
+	DECL_CONV_STUB(IfcBlock);
+	DECL_CONV_STUB(IfcProjectOrderRecord);
+	DECL_CONV_STUB(IfcFlowMeterType);
+	DECL_CONV_STUB(IfcControllerType);
+	DECL_CONV_STUB(IfcBeam);
+	DECL_CONV_STUB(IfcArbitraryOpenProfileDef);
+	DECL_CONV_STUB(IfcCenterLineProfileDef);
+	DECL_CONV_STUB(IfcTimeSeriesSchedule);
+	DECL_CONV_STUB(IfcRoundedEdgeFeature);
+	DECL_CONV_STUB(IfcIShapeProfileDef);
+	DECL_CONV_STUB(IfcSpaceHeaterType);
+	DECL_CONV_STUB(IfcFlowStorageDevice);
+	DECL_CONV_STUB(IfcRevolvedAreaSolid);
+	DECL_CONV_STUB(IfcDoor);
+	DECL_CONV_STUB(IfcEllipse);
+	DECL_CONV_STUB(IfcTubeBundleType);
+	DECL_CONV_STUB(IfcAngularDimension);
+	DECL_CONV_STUB(IfcFaceBasedSurfaceModel);
+	DECL_CONV_STUB(IfcCraneRailFShapeProfileDef);
+	DECL_CONV_STUB(IfcColumnType);
+	DECL_CONV_STUB(IfcTShapeProfileDef);
+	DECL_CONV_STUB(IfcEnergyConversionDevice);
+	DECL_CONV_STUB(IfcWorkSchedule);
+	DECL_CONV_STUB(IfcZone);
+	DECL_CONV_STUB(IfcTransportElement);
+	DECL_CONV_STUB(IfcGeometricRepresentationSubContext);
+	DECL_CONV_STUB(IfcLShapeProfileDef);
+	DECL_CONV_STUB(IfcGeometricCurveSet);
+	DECL_CONV_STUB(IfcActor);
+	DECL_CONV_STUB(IfcOccupant);
+	DECL_CONV_STUB(IfcBooleanClippingResult);
+	DECL_CONV_STUB(IfcAnnotationFillArea);
+	DECL_CONV_STUB(IfcLightSourceSpot);
+	DECL_CONV_STUB(IfcFireSuppressionTerminalType);
+	DECL_CONV_STUB(IfcElectricGeneratorType);
+	DECL_CONV_STUB(IfcInventory);
+	DECL_CONV_STUB(IfcPolyline);
+	DECL_CONV_STUB(IfcBoxedHalfSpace);
+	DECL_CONV_STUB(IfcAirTerminalType);
+	DECL_CONV_STUB(IfcDistributionPort);
+	DECL_CONV_STUB(IfcCostItem);
+	DECL_CONV_STUB(IfcStructuredDimensionCallout);
+	DECL_CONV_STUB(IfcStructuralResultGroup);
+	DECL_CONV_STUB(IfcOrientedEdge);
+	DECL_CONV_STUB(IfcCsgSolid);
+	DECL_CONV_STUB(IfcPlanarBox);
+	DECL_CONV_STUB(IfcMaterialDefinitionRepresentation);
+	DECL_CONV_STUB(IfcAsymmetricIShapeProfileDef);
+	DECL_CONV_STUB(IfcRepresentationMap);
+
+
+#undef DECL_CONV_STUB
+
+} //! STEP
+} //! Assimp
+
+#endif // INCLUDED_IFC_READER_GEN_H
diff --git a/code/Importer.cpp b/code/Importer.cpp
index f4c3da7cc..629d704c7 100644
--- a/code/Importer.cpp
+++ b/code/Importer.cpp
@@ -54,8 +54,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  * further imports with the same Importer instance could fail/crash/burn ...
  */
 // ------------------------------------------------------------------------------------------------
-#define ASSIMP_CATCH_GLOBAL_EXCEPTIONS
-
+#ifndef ASSIMP_BUILD_DEBUG
+#	define ASSIMP_CATCH_GLOBAL_EXCEPTIONS
+#endif
 
 // ------------------------------------------------------------------------------------------------
 // Internal headers
@@ -184,6 +185,9 @@ using namespace Assimp::Formatter;
 #ifndef ASSIMP_BUILD_NO_NDO_IMPORTER
 #	include "NDOLoader.h"
 #endif
+#ifndef ASSIMP_BUILD_NO_IFC_IMPORTER
+#	include "IFCLoader.h"
+#endif
 
 // ------------------------------------------------------------------------------------------------
 // Post processing-Steps
@@ -432,6 +436,9 @@ Importer::Importer()
 #if (!defined ASSIMP_BUILD_NO_NDO_IMPORTER)
 	pimpl->mImporter.push_back( new NDOImporter() );
 #endif
+#if (!defined ASSIMP_BUILD_NO_IFC_IMPORTER)
+	pimpl->mImporter.push_back( new IFCImporter() );
+#endif
 
 	// ----------------------------------------------------------------------------
 	// Add an instance of each post processing step here in the order 
diff --git a/code/LineSplitter.h b/code/LineSplitter.h
index d72a934bc..4ec8b8957 100644
--- a/code/LineSplitter.h
+++ b/code/LineSplitter.h
@@ -189,7 +189,7 @@ public:
 		return &cur;
 	}
 
-	const std::string& operator* () const {
+	std::string operator* () const {
 		return cur;
 	}
 
diff --git a/code/ParsingUtils.h b/code/ParsingUtils.h
index 3b1fda348..108fdb9e2 100644
--- a/code/ParsingUtils.h
+++ b/code/ParsingUtils.h
@@ -48,21 +48,54 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "StringComparison.h"
 namespace Assimp {
 
+	// NOTE: the functions below are mostly intended as replacement for
+	// std::upper, std::lower, std::isupper, std::islower, std::isspace.
+	// we don't bother of locales. We don't want them. We want reliable
+	// (i.e. identical) results across all locales.
+
+	// The functions below accept any character type, but know only
+	// about ASCII. However, UTF-32 is the only safe ASCII superset to
+	// use since it doesn't have multibyte sequences.
+
 // ---------------------------------------------------------------------------------
 template <class char_t>
-AI_FORCE_INLINE bool IsSpace( const char_t in)
+AI_FORCE_INLINE char_t ToLower( char_t in)
+{
+	return (in >= (char_t)'A' && in <= (char_t)'Z') ? (char_t)(in+0x20) : in;
+}
+// ---------------------------------------------------------------------------------
+template <class char_t>
+AI_FORCE_INLINE char_t ToUpper( char_t in)
+{
+	return (in >= (char_t)'a' && in <= (char_t)'z') ? (char_t)(in-0x20) : in;
+}
+// ---------------------------------------------------------------------------------
+template <class char_t>
+AI_FORCE_INLINE bool IsUpper( char_t in)
+{
+	return (in >= (char_t)'A' && in <= (char_t)'Z');
+}
+// ---------------------------------------------------------------------------------
+template <class char_t>
+AI_FORCE_INLINE bool IsLower( char_t in)
+{
+	return (in >= (char_t)'a' && in <= (char_t)'z');
+}
+// ---------------------------------------------------------------------------------
+template <class char_t>
+AI_FORCE_INLINE bool IsSpace( char_t in)
 {
 	return (in == (char_t)' ' || in == (char_t)'\t');
 }
 // ---------------------------------------------------------------------------------
 template <class char_t>
-AI_FORCE_INLINE bool IsLineEnd( const char_t in)
+AI_FORCE_INLINE bool IsLineEnd( char_t in)
 {
 	return (in == (char_t)'\r' || in == (char_t)'\n' || in == (char_t)'\0');
 }
 // ---------------------------------------------------------------------------------
 template <class char_t>
-AI_FORCE_INLINE bool IsSpaceOrNewLine( const char_t in)
+AI_FORCE_INLINE bool IsSpaceOrNewLine( char_t in)
 {
 	return IsSpace<char_t>(in) || IsLineEnd<char_t>(in);
 }
diff --git a/code/STEPFile.h b/code/STEPFile.h
new file mode 100644
index 000000000..83c042310
--- /dev/null
+++ b/code/STEPFile.h
@@ -0,0 +1,954 @@
+/*
+Open Asset Import Library (ASSIMP)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2010, ASSIMP Development Team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the ASSIMP team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the ASSIMP Development Team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+#ifndef INCLUDED_AI_STEPFILE_H
+#define INCLUDED_AI_STEPFILE_H
+
+#include <boost/noncopyable.hpp>
+#include <bitset>
+
+//
+#if _MSC_VER >= 1500 || (defined __GNUC___)
+#	define ASSIMP_STEP_USE_UNORDERED_MULTIMAP
+#	else
+#	define step_unordered_map map
+#	define step_unordered_multimap multimap
+#endif
+
+#ifdef ASSIMP_STEP_USE_UNORDERED_MULTIMAP
+#	include <unordered_map>
+#	if _MSC_VER > 1600
+#		define step_unordered_map unordered_map
+#		define step_unordered_multimap unordered_multimap
+#	else
+#		define step_unordered_map tr1::unordered_map
+#		define step_unordered_multimap tr1::unordered_multimap
+#	endif
+#endif
+
+#include "LineSplitter.h"
+
+
+// uncomment this to have the loader evaluate all entities upon loading.
+// this is intended as stress test - by default, entities are evaluated
+// lazily and therefore not unless needed.
+
+//#define ASSIMP_IFC_TEST
+
+namespace Assimp {
+
+// ********************************************************************************
+// before things get complicated, this is the basic outline:
+
+
+namespace STEP {
+
+	namespace EXPRESS {
+
+		// base data types known by EXPRESS schemata - any custom data types will derive one of those
+		class DataType;
+			class UNSET;		/*: public DataType */
+			class ISDERIVED;	/*: public DataType */
+		//	class REAL;			/*: public DataType */
+			class ENUM;			/*: public DataType */
+		//	class STRING;		/*: public DataType */
+		//	class INTEGER;		/*: public DataType */
+			class ENTITY;		/*: public DataType */
+			class LIST;			/*: public DataType */
+		//	class SELECT;		/*: public DataType */
+
+		// a conversion schema is not exactly an EXPRESS schema, rather it 
+		// is a list of pointers to conversion functions to build up the 
+		// object tree from an input file.
+		class ConversionSchema;
+	}
+
+	struct HeaderInfo;
+	class Object;
+	class LazyObject;
+	class DB;
+
+
+	typedef Object* (*ConvertObjectProc)(const DB& db, const EXPRESS::LIST& params);
+}
+
+// ********************************************************************************
+
+
+namespace STEP {
+
+	// -------------------------------------------------------------------------------
+	/** Exception class used by the STEP loading & parsing code. It is typically
+	 *  coupled with a line number. */
+	// -------------------------------------------------------------------------------
+	struct SyntaxError : DeadlyImportError
+	{
+		enum {
+			LINE_NOT_SPECIFIED = 0xffffffffffffffffLL
+		};
+
+		SyntaxError (const std::string& s,uint64_t line = LINE_NOT_SPECIFIED);
+	};
+
+
+	// -------------------------------------------------------------------------------
+	/** Exception class used by the STEP loading & parsing code when a type
+	 *  error (i.e. an entity expects a string but receives a bool) occurs.
+	 *  It is typically coupled with both an entity id and a line number.*/
+	// -------------------------------------------------------------------------------
+	struct TypeError : DeadlyImportError
+	{
+		enum {
+			ENTITY_NOT_SPECIFIED = 0xffffffffffffffffLL
+		};
+
+		TypeError (const std::string& s,uint64_t entity = ENTITY_NOT_SPECIFIED, uint64_t line = SyntaxError::LINE_NOT_SPECIFIED);
+	};
+
+
+	// hack to make a given member template-dependent 
+	template <typename T, typename T2>
+	T2& Couple(T2& in) {
+		return in;
+	}
+
+
+	namespace EXPRESS {
+
+		// -------------------------------------------------------------------------------
+		//** Base class for all STEP data types */
+		// -------------------------------------------------------------------------------
+		class DataType 
+		{
+		public:
+
+			typedef const DataType* Out;
+
+		public:
+
+			virtual ~DataType() {
+			}
+
+		public:
+
+			template <typename T>
+			const T& To() const {
+				return dynamic_cast<const T&>(*this);
+			}
+
+			template <typename T>
+			T& To() {
+				return dynamic_cast<T&>(*this);
+			}
+
+
+			template <typename T>
+			const T* ToPtr() const {
+				return dynamic_cast<const T*>(this);
+			}
+
+			template <typename T>
+			T* ToPtr() {
+				return dynamic_cast<T*>(this);
+			}
+
+			// utilities to deal with SELECT entities, which currently lack automatic
+			// conversion support.
+			template <typename T>
+			const T& ResolveSelect(const DB& db) const {
+				return Couple<T>(db).MustGetObject(To<EXPRESS::ENTITY>())->To<T>();
+			}
+
+			template <typename T>
+			const T* ResolveSelectPtr(const DB& db) const {
+				const EXPRESS::ENTITY* e = ToPtr<EXPRESS::ENTITY>();
+				return e?Couple<T>(db).MustGetObject(*e)->ToPtr<T>():(const T*)0;
+			}
+
+		public:
+
+			/** parse a variable from a string and set 'inout' to the character 
+			 *  behind the last consumed character. An optional schema enables,
+			 *  if specified, automatic conversion of custom data types.
+			 *
+			 *  @throw SyntaxError
+			 */
+			static const DataType* Parse(const char*& inout,
+				uint64_t line							= SyntaxError::LINE_NOT_SPECIFIED,
+				const EXPRESS::ConversionSchema* schema = NULL);
+
+		public:
+		};
+
+		typedef DataType SELECT;
+		typedef DataType LOGICAL;
+
+		// -------------------------------------------------------------------------------
+		/** Sentinel class to represent explicitly unset (optional) fields ($) */
+		// -------------------------------------------------------------------------------
+		class UNSET : public DataType 
+		{
+		public:
+		private:
+		};
+
+		// -------------------------------------------------------------------------------
+		/** Sentinel class to represent explicitly derived fields (*) */
+		// -------------------------------------------------------------------------------
+		class ISDERIVED : public DataType 
+		{
+		public:
+		private:
+		};
+
+		// -------------------------------------------------------------------------------
+		/** Shared implementation for some of the primitive data type, i.e. int, float */
+		// -------------------------------------------------------------------------------
+		template <typename T>
+		class PrimitiveDataType : public DataType 
+		{
+		public:
+
+			// This is the type that will ultimatively be used to
+			// expose this data type to the user.
+			typedef T Out;
+
+		public:
+
+			PrimitiveDataType() {}
+			PrimitiveDataType(const T& val) 
+				: val(val)
+			{}
+
+			PrimitiveDataType(const PrimitiveDataType& o) {
+				(*this) = o;
+			}
+
+		public:
+
+			operator const T& () const {
+				return val;
+			}
+
+			PrimitiveDataType& operator=(const PrimitiveDataType& o) {
+				val = o.val;
+				return *this;
+			}
+
+		protected:
+			T val;
+
+		};
+
+		typedef PrimitiveDataType<int64_t>			INTEGER; 
+		typedef PrimitiveDataType<float>			REAL; 
+		typedef PrimitiveDataType<float>			NUMBER; 
+		typedef PrimitiveDataType<std::string>		STRING; 
+		
+
+
+		// -------------------------------------------------------------------------------
+		/** Generic base class for all enumerated types */
+		// -------------------------------------------------------------------------------
+		class ENUMERATION : public STRING 
+		{
+		public:
+
+			ENUMERATION (const std::string& val)
+				: STRING(val)
+			{}
+
+		private:
+		};
+		
+		typedef ENUMERATION BOOLEAN;
+
+		// -------------------------------------------------------------------------------
+		/** This is just a reference to an entity/object somewhere else */
+		// -------------------------------------------------------------------------------
+		class ENTITY : public PrimitiveDataType<uint64_t>
+		{
+		public:
+
+			ENTITY(uint64_t val)
+				: PrimitiveDataType<uint64_t>(val)
+			{
+				ai_assert(val!=0);
+			}
+
+			ENTITY()
+				: PrimitiveDataType<uint64_t>(TypeError::ENTITY_NOT_SPECIFIED)
+			{
+			}
+
+		private:
+		};
+
+		// -------------------------------------------------------------------------------
+		/** Wrap any STEP aggregate: LIST, SET, ... */
+		// -------------------------------------------------------------------------------
+		class LIST : public DataType 
+		{
+		public:
+
+			// access a particular list index, throw std::range_error for wrong indices 
+			const DataType* operator[] (size_t index) const {
+				return members[index].get();
+			}
+
+			size_t GetSize() const {
+				return members.size();
+			}
+
+		public:
+
+			/** @see DaraType::Parse */
+			static const LIST* Parse(const char*& inout,
+				uint64_t line							= SyntaxError::LINE_NOT_SPECIFIED,
+				const EXPRESS::ConversionSchema* schema = NULL);
+
+
+		private:
+			typedef std::vector< boost::shared_ptr<const DataType> > MemberList;
+			MemberList members;
+		};
+
+
+		// -------------------------------------------------------------------------------
+		/* Not exactly a full EXPRESS schema but rather a list of conversion functions
+		 * to extract valid C++ objects out of a STEP file. Those conversion functions
+		 * may, however, perform further schema validations. */
+		// -------------------------------------------------------------------------------
+		class ConversionSchema
+		{
+
+		public:
+
+			struct SchemaEntry {
+				SchemaEntry(const char* name,ConvertObjectProc func)
+					: name(name)
+					, func(func)
+				{}
+			
+				const char* name;
+				ConvertObjectProc func;
+			};
+
+		public:
+
+			template <size_t N> 
+			explicit ConversionSchema( const SchemaEntry (& schemas)[N]) {
+				*this = schemas;
+			}
+
+			ConversionSchema() {}
+
+		public:
+
+			ConvertObjectProc GetConverterProc(const std::string& name) const {
+				std::map<std::string,ConvertObjectProc>::const_iterator it = converters.find(name);
+				return it == converters.end() ? NULL : (*it).second;
+			}
+
+
+			bool IsKnownToken(const std::string& name) const {
+				return converters.find(name) != converters.end();
+			}
+
+
+			template <size_t N> 
+			const ConversionSchema& operator=( const SchemaEntry (& schemas)[N]) {
+				for(size_t i = 0; i < N; ++i ) {
+					const SchemaEntry& schema = schemas[i];
+					converters[schema.name] = schema.func;
+				}
+				return *this;
+			}
+
+		private:
+
+			std::map<std::string,ConvertObjectProc> converters;
+		};
+	}
+
+
+
+	// ------------------------------------------------------------------------------
+	/** Bundle all the relevant info from a STEP header, parts of which may later
+	 *  be plainly dumped to the logfile, whereas others may help the caller pick an
+	 *  appropriate loading strategy.*/
+	// ------------------------------------------------------------------------------
+	struct HeaderInfo
+	{
+		std::string timestamp;
+		std::string app;
+		std::string fileSchema;
+	};
+
+
+	// ------------------------------------------------------------------------------
+	/** Base class for all concrete object instances */
+	// ------------------------------------------------------------------------------
+	class Object 
+	{
+	public:
+
+		virtual ~Object() {}
+
+	public:
+
+		// utilities to simplify casting to concrete types
+		template <typename T>
+		const T& To() const {
+			return dynamic_cast<const T&>(*this);
+		}
+
+		template <typename T>
+		T& To() {
+			return dynamic_cast<T&>(*this);
+		}
+
+
+		template <typename T>
+		const T* ToPtr() const {
+			return dynamic_cast<const T*>(this);
+		}
+
+		template <typename T>
+		T* ToPtr() {
+			return dynamic_cast<T*>(this);
+		}
+
+	public:
+
+		uint64_t GetID() const {
+			return id;
+		}
+
+		std::string GetClassName() const {
+			// strictly speaking this relies on unspecified behaviour - we hijack the name() field of std::type_info
+			const char* s = typeid(*this).name(), *s2 = strstr(s,"IFC::");
+			return std::string(s2?s2+5:s);
+		}
+
+		void SetID(uint64_t newval) {
+			id = newval;
+		}
+
+	private:
+		uint64_t id;
+	};
+
+
+	template <typename T>
+	size_t GenericFill(const STEP::DB& db, const EXPRESS::LIST& params, T* in);
+	// (intentionally undefined)
+
+
+	// ------------------------------------------------------------------------------
+	/** CRTP shared base class for use by concrete entity implementation classes */
+	// ------------------------------------------------------------------------------
+	template <typename TDerived, size_t arg_count>
+	struct ObjectHelper : virtual Object  
+	{
+		ObjectHelper() : aux_is_derived(0) {}
+
+		static Object* Construct(const STEP::DB& db, const EXPRESS::LIST& params) {
+			// make sure we don't leak if Fill() throws an exception
+			std::auto_ptr<TDerived> impl(new TDerived()); 
+
+			// GenericFill<T> is undefined so we need to have a specialization
+			const size_t num_args = GenericFill<TDerived>(db,params,&*impl);
+			
+			// the following check is commented because it will always trigger if
+			// parts of the entities are generated with dummy wrapper code.
+			// This is currently done to reduce the size of the loader 
+			// code.
+			//if (num_args != params.GetSize() && impl->GetClassName() != "NotImplemented") {
+			//	DefaultLogger::get()->debug("STEP: not all parameters consumed");
+			//}
+			return impl.release();
+		}
+
+		// note that this member always exists multiple times within the hierarchy
+		// of an individual object, so any access to it must be disambiguated.
+		std::bitset<arg_count> aux_is_derived;
+	};
+
+	// ------------------------------------------------------------------------------
+	/** Class template used to represent OPTIONAL data members in the converted schema */
+	// ------------------------------------------------------------------------------
+	template <typename T>
+	struct Maybe 
+	{
+		Maybe() : have() {}
+		explicit Maybe(const T& ptr) : ptr(ptr), have(true) {
+		}
+
+
+		void flag_invalid() {
+			have = false;
+		}
+
+		void flag_valid() {
+			have = true;
+		}
+
+		
+		bool operator! () const {
+			return !have;
+		}
+
+		operator bool() const {
+			return have;
+		}
+
+		operator const T&() const {
+			return Get();
+		}
+
+		const T& Get() const {
+			ai_assert(have);
+			return ptr;
+		}
+
+		Maybe& operator=(const T& _ptr) {
+			ptr = _ptr;
+			have = true;
+			return *this;
+		}
+
+	private:
+
+		template <typename T2> friend struct InternGenericConvert;
+
+		operator T&() {
+			return ptr;
+		}
+
+		T ptr;
+		bool have;
+	};
+
+	// ------------------------------------------------------------------------------
+	/** A LazyObject is created when needed. Before this happens, we just keep
+       the text line that contains the object definition. */
+	// -------------------------------------------------------------------------------
+	class LazyObject : public boost::noncopyable
+	{
+		friend class DB;
+	public:
+
+		LazyObject(DB& db, uint64_t id,uint64_t line,const std::string& type,const std::string& args);
+		~LazyObject();
+
+	public:
+
+		Object& operator * () {
+			if (!obj) {
+				LazyInit();
+				ai_assert(obj);
+			}
+			return *obj;
+		}
+
+		const Object& operator * () const {
+			if (!obj) {
+				LazyInit();
+				ai_assert(obj);
+			}
+			return *obj;
+		}
+
+		template <typename T>
+		const T& To() const {
+			return dynamic_cast<const T&>( **this );
+		}
+
+		template <typename T>
+		T& To()  {
+			return dynamic_cast<T&>( **this );
+		}
+
+		template <typename T>
+		const T* ToPtr() const {
+			return dynamic_cast<const T*>( &**this );
+		}
+
+		template <typename T>
+		T* ToPtr()  {
+			return dynamic_cast<T*>( &**this );
+		}
+
+		Object* operator -> () {
+			return &**this;
+		}
+
+		const Object* operator -> () const {
+			return &**this;
+		}
+
+		bool operator== (const std::string& atype) const {
+			return type == atype;
+		}
+
+		bool operator!= (const std::string& atype) const {
+			return type != atype;
+		}
+
+	private:
+
+		void LazyInit() const;
+
+	private:
+
+		const uint64_t id, line;
+		const std::string type;
+		DB& db;
+
+		const EXPRESS::LIST* conv_args;
+		mutable Object* obj;
+	};
+
+	template <typename T>
+	inline bool operator==( boost::shared_ptr<LazyObject> lo, T whatever ) {
+		return *lo == whatever; // XXX use std::forward if we have 0x
+	}
+
+	template <typename T>
+	inline bool operator==( const std::pair<uint64_t, boost::shared_ptr<LazyObject> >& lo, T whatever ) {
+		return *(lo.second) == whatever; // XXX use std::forward if we have 0x
+	}
+
+
+	// ------------------------------------------------------------------------------
+	/** Class template used to represent lazily evaluated object references in the converted schema */
+	// ------------------------------------------------------------------------------
+	template <typename T>
+	struct Lazy
+	{
+		typedef Lazy Out;
+		Lazy(const LazyObject* obj = NULL) : obj(obj) {
+		}
+		
+		operator const T&() const {
+			return obj->To<T>();
+		}
+
+		const T& operator * () const {
+			return obj->To<T>();
+		}
+
+		const T* operator -> () const {
+			return &obj->To<T>();
+		}
+
+		const LazyObject* obj;
+	};
+
+	// ------------------------------------------------------------------------------
+	/** Class template used to represent LIST and SET data members in the converted schema */
+	// ------------------------------------------------------------------------------
+	template <typename T, uint64_t min_cnt, uint64_t max_cnt=0uL>
+	struct ListOf : public std::vector<typename T::Out>
+	{
+		typedef typename T::Out OutScalar;
+		typedef ListOf Out;
+
+		BOOST_STATIC_ASSERT(min_cnt <= max_cnt || !max_cnt);
+		ListOf() {
+		}
+
+	};
+
+
+	// ------------------------------------------------------------------------------
+	template <typename TOut>
+	struct PickBaseType {
+		typedef EXPRESS::PrimitiveDataType<TOut> Type;
+	};
+
+	template <typename TOut>
+	struct PickBaseType< Lazy<TOut> > {
+		typedef EXPRESS::ENTITY Type;
+	};
+
+	template <> struct PickBaseType<EXPRESS::DataType*>;
+
+	// ------------------------------------------------------------------------------
+	template <typename T>
+	struct InternGenericConvert {
+		void operator()(T& out, const EXPRESS::DataType& in, const STEP::DB& db) {
+			try{
+				out = dynamic_cast< const typename PickBaseType<T>::Type& > ( in );
+			}
+			catch(std::bad_cast&) {
+				throw TypeError("type error reading literal field");
+			}
+		}
+	};
+
+	template <>
+	struct InternGenericConvert<const EXPRESS::DataType*> {
+		void operator()(const EXPRESS::DataType*& out, const EXPRESS::DataType& in, const STEP::DB& db) {
+			out = &in;
+		}
+	};
+
+	template <typename T>
+	struct InternGenericConvert< Maybe<T> > {
+		void operator()(Maybe<T>& out, const EXPRESS::DataType& in, const STEP::DB& db) {
+			GenericConvert((T&)out,in,db);
+			out.flag_valid();
+		}
+	};
+
+	template <typename T,uint64_t min_cnt, uint64_t max_cnt>
+	struct InternGenericConvertList {
+		void operator()(ListOf<T, min_cnt, max_cnt>& out, const EXPRESS::DataType& inp_base, const STEP::DB& db) {
+
+			const EXPRESS::LIST* inp = dynamic_cast<const EXPRESS::LIST*>(&inp_base);
+			if (!inp) {
+				throw TypeError("type error reading aggregate");
+			}
+
+			// XXX is this really how the EXPRESS notation ([?:3],[1:3]) .. works?
+			// too many is warning, too few is critical error because the user won't validate this
+			if (max_cnt && inp->GetSize() > max_cnt) {
+				DefaultLogger::get()->warn("too many aggregate elements");
+			}
+			else if (inp->GetSize() < min_cnt) {
+				throw TypeError("too few aggregate elements");
+			}
+
+			out.reserve(inp->GetSize());
+			for(size_t i = 0; i < inp->GetSize(); ++i) {
+
+				out.push_back( typename ListOf<T, min_cnt, max_cnt>::OutScalar() );
+				try{
+					GenericConvert(out.back(),*(*inp)[i], db);
+				}
+				catch(const TypeError& t) {
+					throw TypeError(t.what() +std::string(" of aggregate"));
+				}
+			}
+		}
+	};
+
+	template <typename T>
+	struct InternGenericConvert< Lazy<T> > {
+		void operator()(Lazy<T>& out, const EXPRESS::DataType& in_base, const STEP::DB& db) {
+			const EXPRESS::ENTITY* in = dynamic_cast<const EXPRESS::ENTITY*>(&in_base);
+			if (!in) {
+				throw TypeError("type error reading entity");
+			}
+			out = Couple<T>(db).GetObject(*in);
+		}
+	};
+
+	template <typename T1>
+	inline void GenericConvert(T1& a, const EXPRESS::DataType& b, const STEP::DB& db) {
+		return InternGenericConvert<T1>()(a,b,db);
+	}
+
+	template <typename T1,uint64_t N1, uint64_t N2>
+	inline void GenericConvert(ListOf<T1,N1,N2>& a, const EXPRESS::DataType& b, const STEP::DB& db) {
+		return InternGenericConvertList<T1,N1,N2>()(a,b,db);
+	}
+
+
+	// ------------------------------------------------------------------------------
+	/** Lightweight manager class that holds the map of all objects in a 
+	 *  STEP file. DB's are exclusively maintained by the functions in
+	 *  STEPFileReader.h*/
+	// -------------------------------------------------------------------------------
+	class DB
+	{
+		friend DB* ReadFileHeader(boost::shared_ptr<IOStream> stream);
+		friend void ReadFile(DB& db,const EXPRESS::ConversionSchema& scheme);
+		friend class LazyObject;
+
+	public:
+
+		// objects indexed by ID
+		typedef std::map<uint64_t,boost::shared_ptr<const LazyObject> > ObjectMap;
+
+		// objects indexed by their declarative type
+		typedef std::step_unordered_multimap<std::string, const LazyObject* > ObjectMapByType;
+		typedef std::pair<ObjectMapByType::const_iterator,ObjectMapByType::const_iterator> ObjectMapRange;
+
+		// references - for each object id the ids of all objects which reference it
+		typedef std::multimap<uint64_t, uint64_t > RefMap;
+		typedef std::pair<RefMap::const_iterator,RefMap::const_iterator> RefMapRange;
+
+	private:
+
+		DB(boost::shared_ptr<StreamReaderLE> reader) 
+			: reader(reader)
+			, splitter(*reader,true,true)
+			, evaluated_count()
+		{}
+
+	public:
+
+		uint64_t GetObjectCount() const {
+			return objects.size();
+		}
+
+		uint64_t GetEvaluatedObjectCount() const {
+			return evaluated_count;
+		}
+
+		const HeaderInfo& GetHeader() const {
+			return header;
+		}
+
+		const EXPRESS::ConversionSchema& GetSchema() const {
+			return *schema;
+		}
+
+		const ObjectMap& GetObjects() const {
+			return objects;
+		}
+
+		const ObjectMapByType& GetObjectsByType() const {
+			return objects_bytype;
+		}
+
+		const RefMap& GetRefs() const {
+			return refs;
+		}
+
+
+		// get the yet unevaluated object record with a given id
+		const LazyObject* GetObject(uint64_t id) const {
+			const ObjectMap::const_iterator it = objects.find(id);
+			if (it != objects.end()) {
+				return (*it).second.get();
+			}
+			return NULL;
+		}
+
+
+		// get an arbitrary object out of the soup with the only restriction being its type.
+		const LazyObject* GetObject(const std::string& type) const {
+			const ObjectMapByType::const_iterator it = objects_bytype.find(type);
+			if (it != objects_bytype.end()) {
+				return (*it).second;
+			}
+			return NULL;
+		}
+
+		// same, but raise an exception if the object doesn't exist and return a reference
+		const LazyObject& MustGetObject(uint64_t id) const {
+			const LazyObject* o = GetObject(id);
+			if (!o) {
+				throw TypeError("requested entity is not present",id);
+			}
+			return *o;
+		}
+
+		const LazyObject& MustGetObject(const std::string& type) const {
+			const LazyObject* o = GetObject(type);
+			if (!o) {
+				throw TypeError("requested entity of type "+type+"is not present");
+			}
+			return *o;
+		}
+
+
+#ifdef ASSIMP_IFC_TEST
+
+		// evaluate *all* entities in the file. this is a power test for the loader
+		void EvaluateAll() {
+			BOOST_FOREACH(ObjectMap::value_type& e,objects) {
+				**e.second;
+			}
+			ai_assert(evaluated_count == objects.size());
+		}
+
+#endif
+
+	private:
+
+		// full access only offered to close friends - they should 
+		// use the provided getters rather than messing around with
+		// the members directly.
+		LineSplitter& GetSplitter() {
+			return splitter;
+		}
+
+		void InternInsert(boost::shared_ptr<LazyObject> lz) {
+			objects[lz->id] = lz;
+			objects_bytype.insert(std::make_pair(lz->type,lz.get()));
+		}
+
+		void SetSchema(const EXPRESS::ConversionSchema& _schema) {
+			schema = &_schema;
+		}
+
+		HeaderInfo& GetHeader() {
+			return header;
+		}
+
+		void MarkRef(uint64_t who, uint64_t by_whom) {
+			refs.insert(std::make_pair(who,by_whom));
+		}
+
+	private:
+
+		HeaderInfo header;
+		ObjectMap objects;
+		ObjectMapByType objects_bytype;
+		RefMap refs;
+
+		boost::shared_ptr<StreamReaderLE> reader;
+		LineSplitter splitter;
+
+		uint64_t evaluated_count;
+
+		const EXPRESS::ConversionSchema* schema;
+	};
+
+}
+
+
+} // end Assimp
+#endif
diff --git a/code/STEPFileReader.cpp b/code/STEPFileReader.cpp
new file mode 100644
index 000000000..cf5049cac
--- /dev/null
+++ b/code/STEPFileReader.cpp
@@ -0,0 +1,445 @@
+/*
+Open Asset Import Library (ASSIMP)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2010, ASSIMP Development Team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the ASSIMP team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the ASSIMP Development Team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file  STEPFileReader.cpp
+ *  @brief Implementation of the STEP file parser, which fills a 
+ *     STEP::DB with data read from a file.
+ */
+#include "AssimpPCH.h"
+#include "STEPFileReader.h"
+#include "TinyFormatter.h"
+#include "fast_atof.h"
+
+using namespace Assimp;
+namespace EXPRESS = STEP::EXPRESS;
+
+#include <functional>
+
+// ------------------------------------------------------------------------------------------------
+// From http://stackoverflow.com/questions/216823/whats-the-best-way-to-trim-stdstring
+
+// trim from start
+static inline std::string &ltrim(std::string &s) {
+	s.erase(s.begin(), std::find_if(s.begin(), s.end(), std::not1( std::ptr_fun(Assimp::IsSpace<char>))));
+	return s;
+}
+
+// trim from end
+static inline std::string &rtrim(std::string &s) {
+	s.erase(std::find_if(s.rbegin(), s.rend(), std::not1( std::ptr_fun(Assimp::IsSpace<char>))).base());
+	return s;
+}
+// trim from both ends
+static inline std::string &trim(std::string &s) {
+	return ltrim(rtrim(s));
+}
+
+
+
+
+// ------------------------------------------------------------------------------------------------
+std::string AddLineNumber(const std::string& s,uint64_t line /*= LINE_NOT_SPECIFIED*/, const std::string& prefix = "") 
+{
+	return line == STEP::SyntaxError::LINE_NOT_SPECIFIED ? prefix+s : static_cast<std::string>( (Formatter::format(),prefix,"(line ",line,") ",s) );
+}
+
+
+// ------------------------------------------------------------------------------------------------
+std::string AddEntityID(const std::string& s,uint64_t entity /*= ENTITY_NOT_SPECIFIED*/, const std::string& prefix = "") 
+{
+	return entity == STEP::TypeError::ENTITY_NOT_SPECIFIED ? prefix+s : static_cast<std::string>( (Formatter::format(),prefix,"(entity #",entity,") ",s));
+}
+
+
+// ------------------------------------------------------------------------------------------------
+STEP::SyntaxError::SyntaxError (const std::string& s,uint64_t line /* = LINE_NOT_SPECIFIED */)
+: DeadlyImportError(AddLineNumber(s,line))
+{
+
+}
+
+// ------------------------------------------------------------------------------------------------
+STEP::TypeError::TypeError (const std::string& s,uint64_t entity /* = ENTITY_NOT_SPECIFIED */,uint64_t line /*= LINE_NOT_SPECIFIED*/)
+: DeadlyImportError(AddLineNumber(AddEntityID(s,entity),line))
+{
+
+}
+
+
+// ------------------------------------------------------------------------------------------------
+STEP::DB* STEP::ReadFileHeader(boost::shared_ptr<IOStream> stream)
+{
+	boost::shared_ptr<StreamReaderLE> reader = boost::shared_ptr<StreamReaderLE>(new StreamReaderLE(stream));
+	std::auto_ptr<STEP::DB> db = std::auto_ptr<STEP::DB>(new STEP::DB(reader));
+
+	LineSplitter& splitter = db->GetSplitter();
+	if (!splitter || *splitter != "ISO-10303-21;") {
+		throw STEP::SyntaxError("expected magic token: ISO-10303-21",1);
+	}
+
+	HeaderInfo& head = db->GetHeader();
+	for(++splitter; splitter; ++splitter) {
+		const std::string& s = *splitter;
+		if (s == "DATA;") {
+			// here we go, header done, start of data section
+			++splitter;
+			break;
+		}
+
+		// want one-based line numbers for human readers, so +1
+		const uint64_t line = splitter.get_index()+1;
+
+		if (s.substr(0,11) == "FILE_SCHEMA") {
+			const char* sz = s.c_str()+11;
+			SkipSpaces(sz,&sz);
+			std::auto_ptr< const EXPRESS::DataType > schema = std::auto_ptr< const EXPRESS::DataType >( EXPRESS::DataType::Parse(sz) );
+
+			// the file schema should be a regular list entity, although it usually contains exactly one entry
+			// since the list itself is contained in a regular parameter list, we actually have
+			// two nested lists.
+			const EXPRESS::LIST* list = dynamic_cast<const EXPRESS::LIST*>(schema.get());
+			if (list && list->GetSize()) {
+				list = dynamic_cast<const EXPRESS::LIST*>( (*list)[0] );
+				if (!list) {
+					throw STEP::SyntaxError("expected FILE_SCHEMA to be a list",line);
+				}
+
+				// XXX need support for multiple schemas?
+				if (list->GetSize() > 1)	{
+					DefaultLogger::get()->warn(AddLineNumber("multiple schemas currently not supported",line));
+				}
+				const EXPRESS::STRING* string;
+				if (!list->GetSize() || !(string=dynamic_cast<const EXPRESS::STRING*>( (*list)[0] ))) {
+					throw STEP::SyntaxError("expected FILE_SCHEMA to contain a single string literal",line);
+				}
+				head.fileSchema =  *string;
+			}
+		}
+
+		// XXX handle more header fields
+	}
+
+	return db.release();
+}
+
+
+// ------------------------------------------------------------------------------------------------
+void STEP::ReadFile(DB& db,const EXPRESS::ConversionSchema& scheme)
+{
+	db.SetSchema(scheme);
+
+	const DB::ObjectMap& map = db.GetObjects();
+	LineSplitter& splitter = db.GetSplitter();
+	for(; splitter; ++splitter) {
+		const std::string& s = *splitter;
+		if (s == "ENDSEC;") {
+			break;
+		}
+
+		// want one-based line numbers for human readers, so +1
+		const uint64_t line = splitter.get_index()+1;
+
+		// LineSplitter already ignores empty lines
+		ai_assert(s.length());
+		if (s[0] != '#') {
+			DefaultLogger::get()->warn(AddLineNumber("expected token \'#\'",line));
+			continue;
+		}
+
+		// ---
+		// extract id, entity class name and argument string,
+		// but don't create the actual object yet. 
+		// ---
+
+		const std::string::size_type n0 = s.find_first_of('=');
+		if (n0 == std::string::npos) {
+			DefaultLogger::get()->warn(AddLineNumber("expected token \'=\'",line));
+			continue;
+		}
+
+		const uint64_t id = strtoul10_64(s.substr(1,n0-1).c_str());
+		if (!id) {
+			DefaultLogger::get()->warn(AddLineNumber("expected positive, numeric entity id",line));
+			continue;
+		}
+
+		const std::string::size_type n1 = s.find_first_of('(',n0);
+		if (n1 == std::string::npos) {
+			DefaultLogger::get()->warn(AddLineNumber("expected token \'(\'",line));
+			continue;
+		}
+
+		const std::string::size_type n2 = s.find_last_of(')');
+		if (n2 == std::string::npos || n2 < n1) {
+			DefaultLogger::get()->warn(AddLineNumber("expected token \')\'",line));
+			continue;
+		}
+
+		if (map.find(id) != map.end()) {
+			DefaultLogger::get()->warn(AddLineNumber((Formatter::format(),"an object with the id #",id," already exists"),line));
+		}
+
+		std::string type = s.substr(n0+1,n1-n0-1);
+		trim(type);
+		std::transform( type.begin(), type.end(), type.begin(), &Assimp::ToLower<char>  );
+		db.InternInsert(boost::shared_ptr<LazyObject>(new LazyObject(db,id,line,type,s.substr(n1,n2-n1+1))));
+	}
+
+	if (!splitter) {
+		DefaultLogger::get()->warn("STEP: ignoring unexpected EOF");
+	}
+
+	if ( !DefaultLogger::isNullLogger() ){
+		DefaultLogger::get()->debug((Formatter::format(),"STEP: got ",map.size()," object records"));
+	}
+}
+
+
+// ------------------------------------------------------------------------------------------------
+const EXPRESS::DataType* EXPRESS::DataType::Parse(const char*& inout,uint64_t line, const EXPRESS::ConversionSchema* schema /*= NULL*/)
+{
+	const char* cur = inout;
+	SkipSpaces(&cur);
+
+	if (*cur == ',' || IsSpaceOrNewLine(*cur)) {
+		throw STEP::SyntaxError("unexpected token, expected parameter",line);
+	}
+
+	// just skip over constructions such as IFCPLANEANGLEMEASURE(0.01) and read only the value
+	if (schema) {
+		bool ok = false;
+		for(const char* t = cur; *t && *t != ')' && *t != ','; ++t) {
+			if (*t=='(') {
+				if (!ok) {
+					break;
+				}
+				for(--t;IsSpace(*t);--t);
+				std::string s(cur,static_cast<size_t>(t-cur+1));
+				std::transform(s.begin(),s.end(),s.begin(),&ToLower<char> );
+				if (schema->IsKnownToken(s)) {
+					for(cur = t+1;*cur++ != '(';);
+					const EXPRESS::DataType* const dt = Parse(cur);
+					inout = *cur ? cur+1 : cur;
+					return dt;
+				}
+				break;
+			}
+			else if (!IsSpace(*t)) {
+				ok = true;
+			}
+		}
+	}
+
+	if (*cur == '*' ) {
+		inout = cur+1;
+		return new EXPRESS::ISDERIVED();
+	}
+	else if (*cur == '$' ) {
+		inout = cur+1;
+		return new EXPRESS::UNSET();
+	}
+	else if (*cur == '(' ) {
+		// start of an aggregate, further parsing is done by the LIST factory constructor
+		inout = cur;
+		return EXPRESS::LIST::Parse(inout,line,schema);
+	}
+	else if (*cur == '.' ) {
+		// enum (includes boolean)
+		const char* start = ++cur;
+		for(;*cur != '.';++cur) {
+			if (*cur == '\0') {
+				throw STEP::SyntaxError("enum not closed",line);
+			}
+		}
+		inout = cur+1;
+		return new EXPRESS::ENUMERATION( std::string(start, static_cast<size_t>(cur-start) ));
+	}
+	else if (*cur == '#' ) {
+		// object reference
+		return new EXPRESS::ENTITY(strtoul10_64(++cur,&inout));
+	}
+	else if (*cur == '\'' ) {
+		// string literal
+		const char* start = ++cur;
+		for(;*cur != '\'';++cur) {
+			if (*cur == '\0') {
+				throw STEP::SyntaxError("string literal not closed",line);
+			}
+		}
+		if (cur[1]=='\'') {
+			for(cur+=2;*cur != '\'';++cur) {
+				if (*cur == '\0') {
+					throw STEP::SyntaxError("string literal not closed",line);
+				}
+			}
+		}
+		inout = cur+1;
+		return new EXPRESS::STRING( std::string(start, static_cast<size_t>(cur-start) ));
+	}
+	else if (*cur == '\"' ) {
+		throw STEP::SyntaxError("binary data not supported yet",line);
+	}
+
+	// else -- must be a number. if there is a decimal dot in it,
+	// parse it as real value, otherwise as integer.
+	const char* start = cur;
+	for(;*cur  && *cur != ',' && *cur != ')' && !IsSpace(*cur);++cur) {
+		if (*cur == '.') {
+			// XXX many STEP files contain extremely accurate data, float's precision may not suffice in many cases
+			float f;
+			inout = fast_atof_move(start,f);
+			return new EXPRESS::REAL(f);
+		}
+	}
+
+	bool neg = false;
+	if (*start == '-') {
+		neg = true;
+		++start;
+	}
+	else if (*start == '+') {
+		++start;
+	}
+	int64_t num = static_cast<int64_t>( strtoul10_64(start,&inout) );
+	return new EXPRESS::INTEGER(neg?-num:num);
+}
+
+
+// ------------------------------------------------------------------------------------------------
+const EXPRESS::LIST* EXPRESS::LIST::Parse(const char*& inout,uint64_t line, const EXPRESS::ConversionSchema* schema /*= NULL*/)
+{
+	std::auto_ptr<EXPRESS::LIST> list(new EXPRESS::LIST());
+	EXPRESS::LIST::MemberList& members = list->members;
+
+	const char* cur = inout;
+	if (*cur++ != '(') {
+		throw STEP::SyntaxError("unexpected token, expected \'(\' token at beginning of list",line);
+	}
+
+	// estimate the number of items upfront - lists can grow large
+	size_t count = 1;
+	for(const char* c=cur; *c && *c != ')'; ++c) {
+		count += (*c == ',' ? 1 : 0);
+	}
+
+	members.reserve(count);
+
+	for(;;++cur) {
+		if (!*cur) {
+			throw STEP::SyntaxError("unexpected end of line while reading list");
+		}
+		SkipSpaces(cur,&cur);
+		if (*cur == ')') {
+			break;
+		}
+		
+		members.push_back( boost::shared_ptr<const EXPRESS::DataType>(EXPRESS::DataType::Parse(cur,line,schema)));
+		SkipSpaces(cur,&cur);
+
+		if (*cur != ',') {
+			if (*cur == ')') {
+				break;
+			}
+			throw STEP::SyntaxError("unexpected token, expected \',\' or \')\' token after list element",line);
+		}
+	}
+
+	inout = cur+1;
+	return list.release();
+}
+
+// ------------------------------------------------------------------------------------------------
+STEP::LazyObject::LazyObject(DB& db, uint64_t id,uint64_t line,const std::string& type,const std::string& args) 
+	: db(db)
+	, id(id)
+	, line(line)
+	, type(type)
+	, obj()
+	// need to initialize this upfront, otherwise the destructor
+	// will crash if an exception is thrown in the c'tor
+	, conv_args() 
+{
+	const char* arg = args.c_str();
+	conv_args = EXPRESS::LIST::Parse(arg,line,&db.GetSchema());
+
+	// find any external references and store them in the database.
+	// this helps us emulate STEPs INVERSE fields.
+	for (size_t i = 0; i < conv_args->GetSize(); ++i) {
+		const EXPRESS::DataType* t = conv_args->operator [](i);
+		if (const EXPRESS::ENTITY* e = t->ToPtr<EXPRESS::ENTITY>()) {
+			db.MarkRef(*e,id);
+		}
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+STEP::LazyObject::~LazyObject() 
+{
+	// 'obj' always remains in our possession, so there is 
+	// no need for a smart pointer type.
+	delete obj;
+	delete conv_args;
+}
+
+
+// ------------------------------------------------------------------------------------------------
+void STEP::LazyObject::LazyInit() const
+{
+	const EXPRESS::ConversionSchema& schema = db.GetSchema();
+	STEP::ConvertObjectProc proc = schema.GetConverterProc(type);
+
+	if (!proc) {
+		throw STEP::TypeError("unknown object type: " + type,id,line);
+	}
+
+	// if the converter fails, it should throw an exception, but it should never return NULL
+	try {
+		obj = proc(db,*conv_args);
+	}
+	catch(const TypeError& t) {
+		// augment line and entity information
+		throw TypeError(t.what(),id,line);
+	}
+	++db.evaluated_count;
+	ai_assert(obj);
+
+	// store the original id in the object instance
+	obj->SetID(id);
+}
diff --git a/code/STEPFileReader.h b/code/STEPFileReader.h
new file mode 100644
index 000000000..6ed93c6ae
--- /dev/null
+++ b/code/STEPFileReader.h
@@ -0,0 +1,64 @@
+/*
+Open Asset Import Library (ASSIMP)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2010, ASSIMP Development Team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the ASSIMP team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the ASSIMP Development Team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+#ifndef INCLUDED_AI_STEPFILEREADER_H
+#define INCLUDED_AI_STEPFILEREADER_H
+
+#include "STEPFile.h"
+
+namespace Assimp {
+namespace STEP {
+
+	// ### Parsing a STEP file is a twofold procedure ###
+
+	// --------------------------------------------------------------------------
+	// 1) read file header and return to caller, who checks if the 
+	//    file is of a supported schema ..
+	DB* ReadFileHeader(boost::shared_ptr<IOStream> stream);
+
+	// --------------------------------------------------------------------------
+	// 2) read the actual file contents using a user-supplied set of
+	//    conversion functions to interpret the data.
+	void ReadFile(DB& db,const EXPRESS::ConversionSchema& scheme);
+
+} // ! STEP
+} // ! Assimp
+
+#endif
diff --git a/include/aiConfig.h b/include/aiConfig.h
index 4c4a014e7..bc01f9576 100644
--- a/include/aiConfig.h
+++ b/include/aiConfig.h
@@ -665,12 +665,37 @@ enum aiComponent
 
 
 // ---------------------------------------------------------------------------
-/** Ogre Importer will try to load this Materialfile
- * Ogre Mehs contain only the MaterialName, not the MaterialFile. If there 
+/** @brief Ogre Importer will try to load this Materialfile.
+ *
+ * Ogre Meshes contain only the MaterialName, not the MaterialFile. If there 
  * is no material file with the same name as the material, Ogre Importer will 
  * try to load this file and search the material in it.
+ * <br>
+ * Property type: String. Default value: guessed.
  */
 #define AI_CONFIG_IMPORT_OGRE_MATERIAL_FILE "IMPORT_OGRE_MATERIAL_FILE"
 
 
+// ---------------------------------------------------------------------------
+/** @brief Specfies whether the IFC loader will skip over IfcSpace elements.
+ *
+ * IfcSpace elements (and their geometric representations) are used to
+ * represent, well, free space in a building storey.<br>
+ * Property type: Bool. Default value: true.
+ */
+#define AI_CONFIG_IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS "IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS"
+
+
+// ---------------------------------------------------------------------------
+/** @brief Specfies whether the IFC loader will skip over 
+ *    shape representations of type 'Curve2D'.
+ *
+ * A lot of files contain both a faceted mesh representation and a outline
+ * with a presentation type of 'Curve2D'. Currently Assimp doesn't convert those,
+ * so turning this option off just clutters the log with errors.<br>
+ * Property type: Bool. Default value: true.
+ */
+#define AI_CONFIG_IMPORT_IFC_SKIP_CURVE_REPRESENTATIONS "IMPORT_IFC_SKIP_CURVE_REPRESENTATIONS"
+
+
 #endif // !! AI_CONFIG_H_INC
diff --git a/scripts/IFCImporter/CppGenerator.py b/scripts/IFCImporter/CppGenerator.py
new file mode 100644
index 000000000..b92eaa999
--- /dev/null
+++ b/scripts/IFCImporter/CppGenerator.py
@@ -0,0 +1,281 @@
+#!/usr/bin/env python3
+# -*- Coding: UTF-8 -*-
+
+# ---------------------------------------------------------------------------
+# Open Asset Import Library (ASSIMP)
+# ---------------------------------------------------------------------------
+#
+# Copyright (c) 2006-2010, ASSIMP Development Team
+#
+# All rights reserved.
+#
+# Redistribution and use of this software in source and binary forms, 
+# with or without modification, are permitted provided that the following 
+# conditions are met:
+# 
+# * Redistributions of source code must retain the above
+#   copyright notice, this list of conditions and the
+#   following disclaimer.
+# 
+# * Redistributions in binary form must reproduce the above
+#   copyright notice, this list of conditions and the
+#   following disclaimer in the documentation and/or other
+#   materials provided with the distribution.
+# 
+# * Neither the name of the ASSIMP team, nor the names of its
+#   contributors may be used to endorse or promote products
+#   derived from this software without specific prior
+#   written permission of the ASSIMP Development Team.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# ---------------------------------------------------------------------------
+
+"""Generate the C++ glue code needed to map EXPRESS to C++"""
+
+import sys, os, re
+
+input_template_h = 'IFCReaderGen.h.template'
+input_template_cpp = 'IFCReaderGen.cpp.template'
+
+output_file_h = os.path.join('..','..','code','IFCReaderGen.h')
+output_file_cpp = os.path.join('..','..','code','IFCReaderGen.cpp')
+
+template_entity_predef = '\tstruct {entity};\n'
+template_entity_predef_ni = '\ttypedef NotImplemented {entity}; // (not currently used by Assimp)\n'
+template_entity = r"""
+
+    // C++ wrapper for {entity}
+    struct {entity} : {parent} ObjectHelper<{entity},{argcnt}> {{
+{fields}
+    }};"""
+
+template_entity_ni = ''
+
+template_type = r"""
+    // C++ wrapper type for {type}
+    typedef {real_type} {type};"""
+
+template_stub_decl = '\tDECL_CONV_STUB({type});\n'
+template_schema = '\t\tSchemaEntry("{normalized_name}",&STEP::ObjectHelper<{type},{argcnt}>::Construct )\n'
+template_schema_type = '\t\tSchemaEntry("{normalized_name}",NULL )\n'
+template_converter = r"""
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<{type}>(const DB& db, const LIST& params, {type}* in)
+{{
+{contents}
+}}"""
+
+template_converter_prologue_a = '\tsize_t base = GenericFill(db,params,static_cast<{parent}*>(in));\n'
+template_converter_prologue_b = '\tsize_t base = 0;\n'
+template_converter_check_argcnt = '\tif (params.GetSize() < {max_arg}) {{ throw STEP::TypeError("expected {max_arg} arguments to {name}"); }}'
+template_converter_code_per_field = r"""    do {{ // convert the '{fieldname}' argument
+        const DataType* arg = params[base++];{handle_unset}{convert}
+    }} while(0);
+"""
+template_allow_optional = r"""
+        if (dynamic_cast<const UNSET*>(&*arg)) break;"""
+template_allow_derived = r"""
+        if (dynamic_cast<const ISDERIVED*>(&*arg)) {{ in->ObjectHelper<Assimp::IFC::{type},{argcnt}>::aux_is_derived[{argnum}]=true; break; }}"""        
+template_convert_single = r"""
+        try {{ GenericConvert( in->{name}, *arg, db ); break; }} 
+        catch (const TypeError& t) {{ throw TypeError(t.what() + std::string(" - expected argument {argnum} to {classname} to be a `{full_type}`")); }}"""
+
+template_converter_ommitted = '// this data structure is not used yet, so there is no code generated to fill its members\n'
+template_converter_epilogue = '\treturn base;'
+
+import ExpressReader
+
+
+def get_list_bounds(collection_spec):
+    start,end = [(int(n) if n!='?' else 0) for n in re.findall(r'(\d+|\?)',collection_spec)]
+    return start,end
+
+def get_cpp_type(field,schema):
+    isobjref = field.type in schema.entities
+    base = field.type
+    if isobjref:
+        base = 'Lazy< '+(base if base in schema.whitelist else 'NotImplemented')+' >'
+    if field.collection:
+        start,end = get_list_bounds(field.collection)
+        base = 'ListOf< {0}, {1}, {2} >'.format(base,start,end)
+    if not isobjref:
+        base += '::Out'
+    if field.optional:
+        base = 'Maybe< '+base+' >'
+        
+    return base
+
+def generate_fields(entity,schema):
+    fields = []
+    for e in entity.members:
+        fields.append('\t\t{type} {name};'.format(type=get_cpp_type(e,schema),name=e.name))
+    return '\n'.join(fields)
+
+def handle_unset_args(field,entity,schema,argnum):
+    n = ''
+    # if someone derives from this class, check for derived fields.
+    if any(entity.name==e.parent for e in schema.entities.values()):
+        n += template_allow_derived.format(type=entity.name,argcnt=len(entity.members),argnum=argnum)
+    
+    if not field.optional:
+        return n+''
+    return n+template_allow_optional.format()
+
+def get_single_conversion(field,schema,argnum=0,classname='?'):
+    typen = field.type
+    name = field.name
+    if field.collection:
+        typen = 'LIST'
+    return template_convert_single.format(type=typen,name=name,argnum=argnum,classname=classname,full_type=field.fullspec)
+
+def count_args_up(entity,schema):
+    return len(entity.members) + (count_args_up(schema.entities[entity.parent],schema) if entity.parent else 0)
+
+def resolve_base_type(base,schema):
+    if base in ('INTEGER','REAL','STRING','ENUMERATION','BOOLEAN','NUMBER', 'SELECT','LOGICAL'):
+        return base
+    if base in schema.types:
+        return resolve_base_type(schema.types[base].equals,schema)
+    print(base)
+    return None
+    
+def gen_type_struct(typen,schema):
+    base = resolve_base_type(typen.equals,schema)
+    if not base:
+        return ''
+
+    if typen.aggregate:
+        start,end = get_list_bounds(typen.aggregate)
+        base = 'ListOf< {0}, {1}, {2} >'.format(base,start,end)
+    
+    return template_type.format(type=typen.name,real_type=base)
+
+def gen_converter(entity,schema):
+    max_arg = count_args_up(entity,schema)
+    arg_idx = arg_idx_ofs = max_arg - len(entity.members)
+    
+    code = template_converter_prologue_a.format(parent=entity.parent) if entity.parent else template_converter_prologue_b
+    if entity.name in schema.blacklist_partial:
+        return code+template_converter_ommitted+template_converter_epilogue;
+        
+    code +=template_converter_check_argcnt.format(max_arg=max_arg,name=entity.name)
+    for field in entity.members:
+        code += template_converter_code_per_field.format(fieldname=field.name,
+            handle_unset=handle_unset_args(field,entity,schema,arg_idx-arg_idx_ofs),
+            convert=get_single_conversion(field,schema,arg_idx,entity.name))
+
+        arg_idx += 1
+    return code+template_converter_epilogue
+
+def get_base_classes(e,schema):
+    def addit(e,out):
+        if e.parent:
+            out.append(e.parent)
+            addit(schema.entities[e.parent],out)
+    res = []
+    addit(e,res)
+    return list(reversed(res))
+
+def get_derived(e,schema):
+    def get_deriv(e,out): # bit slow, but doesn't matter here
+        s = [ee for ee in schema.entities.values() if ee.parent == e.name]
+        for sel in s:
+            out.append(sel.name)
+            get_deriv(sel,out)
+    res = []
+    get_deriv(e,res)
+    return res
+
+def get_hierarchy(e,schema):
+    return get_derived(e.schema)+[e.name]+get_base_classes(e,schema)
+
+def sort_entity_list(schema):
+    deps = []
+    entities = schema.entities
+    for e in entities.values():
+        deps += get_base_classes(e,schema)+[e.name]
+
+    checked = [] 
+    for e in deps: 
+        if e not in checked: 
+            checked.append(e)
+    return [entities[e] for e in checked]
+    
+def work(filename):
+    schema = ExpressReader.read(filename,silent=True)
+    entities, stub_decls, schema_table, converters, typedefs, predefs = '','',[],'','',''
+
+    
+    whitelist = []
+    with open('entitylist.txt', 'rt') as inp:
+        whitelist = [n.strip() for n in inp.read().split('\n') if n[:1]!='#' and n.strip()]
+
+    schema.whitelist = set()
+    schema.blacklist_partial = set()
+    for ename in whitelist:
+        try:
+            e = schema.entities[ename]
+        except KeyError:
+            # type, not entity
+            continue
+        for base in [e.name]+get_base_classes(e,schema):
+            schema.whitelist.add(base)
+        for base in get_derived(e,schema):
+            schema.blacklist_partial.add(base)
+
+    schema.blacklist_partial -= schema.whitelist
+    schema.whitelist |= schema.blacklist_partial
+
+    # uncomment this to disable automatic code reduction based on whitelisting all used entities
+    # (blacklisted entities are those who are in the whitelist and may be instanced, but will
+    # only be accessed through a pointer to a base-class.
+    #schema.whitelist = set(schema.entities.keys())
+    #schema.blacklist_partial = set()
+
+    for ntype in schema.types.values():
+        typedefs += gen_type_struct(ntype,schema)
+        schema_table.append(template_schema_type.format(normalized_name=ntype.name.lower()))
+
+    sorted_entities = sort_entity_list(schema)
+    for entity in sorted_entities:
+        parent = entity.parent+',' if entity.parent else ''
+
+        if entity.name in schema.whitelist:
+            converters += template_converter.format(type=entity.name,contents=gen_converter(entity,schema))
+            schema_table.append(template_schema.format(type=entity.name,normalized_name=entity.name.lower(),argcnt=len(entity.members)))
+            entities += template_entity.format(entity=entity.name,argcnt=len(entity.members),parent=parent,fields=generate_fields(entity,schema))
+            predefs += template_entity_predef.format(entity=entity.name)
+            stub_decls += template_stub_decl.format(type=entity.name)
+        else:
+            entities += template_entity_ni.format(entity=entity.name)
+            predefs += template_entity_predef_ni.format(entity=entity.name)
+            schema_table.append(template_schema.format(type="NotImplemented",normalized_name=entity.name.lower(),argcnt=0))
+
+    schema_table = ','.join(schema_table)
+
+    with open(input_template_h,'rt') as inp:
+        with open(output_file_h,'wt') as outp:
+            # can't use format() here since the C++ code templates contain single, unescaped curly brackets
+            outp.write(inp.read().replace('{predefs}',predefs).replace('{types}',typedefs).replace('{entities}',entities).replace('{converter-decl}',stub_decls))
+    
+    with open(input_template_cpp,'rt') as inp:
+        with open(output_file_cpp,'wt') as outp:
+            outp.write(inp.read().replace('{schema-static-table}',schema_table).replace('{converter-impl}',converters))
+
+if __name__ == "__main__":
+    sys.exit(work(sys.argv[1] if len(sys.argv)>1 else 'schema.exp'))
+
+
+
+    
+    
diff --git a/scripts/IFCImporter/ExpressReader.py b/scripts/IFCImporter/ExpressReader.py
new file mode 100644
index 000000000..8fe948c34
--- /dev/null
+++ b/scripts/IFCImporter/ExpressReader.py
@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+# -*- Coding: UTF-8 -*-
+
+# ---------------------------------------------------------------------------
+# Open Asset Import Library (ASSIMP)
+# ---------------------------------------------------------------------------
+#
+# Copyright (c) 2006-2010, ASSIMP Development Team
+#
+# All rights reserved.
+#
+# Redistribution and use of this software in source and binary forms, 
+# with or without modification, are permitted provided that the following 
+# conditions are met:
+# 
+# * Redistributions of source code must retain the above
+#   copyright notice, this list of conditions and the
+#   following disclaimer.
+# 
+# * Redistributions in binary form must reproduce the above
+#   copyright notice, this list of conditions and the
+#   following disclaimer in the documentation and/or other
+#   materials provided with the distribution.
+# 
+# * Neither the name of the ASSIMP team, nor the names of its
+#   contributors may be used to endorse or promote products
+#   derived from this software without specific prior
+#   written permission of the ASSIMP Development Team.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# ---------------------------------------------------------------------------
+
+"""Parse an EXPRESS file and extract basic information on all
+entities and data types contained"""
+
+import sys, os, re
+
+re_match_entity = re.compile(r"""
+ENTITY\s+(\w+)\s*                                    # 'ENTITY foo'
+.*?                                                  #  skip SUPERTYPE-of
+(?:SUBTYPE\s+OF\s+\((\w+)\))?;                       # 'SUBTYPE OF (bar);' or simply ';'
+(.*?)                                                # 'a : atype;' (0 or more lines like this)
+(?:(?:INVERSE|UNIQUE|WHERE)\s*$.*?)?                 #  skip the INVERSE, UNIQUE, WHERE clauses and everything behind 
+END_ENTITY;                                          
+""",re.VERBOSE|re.DOTALL|re.MULTILINE) 
+
+re_match_type = re.compile(r"""
+TYPE\s+(\w+?)\s*=\s*((?:LIST|SET)\s*\[\d+:[\d?]+\]\s*OF)?(?:\s*UNIQUE)?\s*(\w+)   # TYPE foo = LIST[1:2] of blub
+(?:(?<=ENUMERATION)\s*OF\s*\((.*?)\))?
+.*?                                                                 #  skip the WHERE clause
+END_TYPE;
+""",re.VERBOSE|re.DOTALL)
+
+re_match_field = re.compile(r"""
+\s+(\w+?)\s*:\s*(OPTIONAL)?\s*((?:LIST|SET)\s*\[\d+:[\d?]+\]\s*OF)?(?:\s*UNIQUE)?\s*(\w+?);
+""",re.VERBOSE|re.DOTALL)
+
+
+class Schema:
+    def __init__(self):
+        self.entities = {}
+        self.types = {}
+
+class Entity:
+    def __init__(self,name,parent,members):
+        self.name = name
+        self.parent = parent
+        self.members = members
+
+class Field:
+    def __init__(self,name,type,optional,collection):
+        self.name = name
+        self.type = type
+        self.optional = optional
+        self.collection = collection
+        self.fullspec = (self.collection+' ' if self.collection else '') + self.type 
+
+class Type:
+    def __init__(self,name,aggregate,equals,enums):
+        self.name = name
+        self.aggregate = aggregate
+        self.equals = equals
+        self.enums = enums
+        
+
+def read(filename,silent=False):
+    schema = Schema()
+    with open(filename,'rt') as inp: 
+        contents = inp.read()
+        types = re.findall(re_match_type,contents)
+        for name,aggregate,equals,enums in types:
+            schema.types[name] = Type(name,aggregate,equals,enums)
+            
+        entities = re.findall(re_match_entity,contents)
+        for name,parent,fields_raw in entities:
+            print('process entity {0}, parent is {1}'.format(name,parent)) if not silent else None
+            fields = re.findall(re_match_field,fields_raw)
+            members = [Field(name,type,opt,coll) for name, opt, coll, type in fields]
+            print('  got {0} fields'.format(len(members))) if not silent else None
+            
+            schema.entities[name] = Entity(name,parent,members)
+    return schema
+
+if __name__ == "__main__":
+    sys.exit(read(sys.argv[1] if len(sys.argv)>1 else 'schema.exp'))
+
+
+
+
+    
diff --git a/scripts/IFCImporter/IFCReaderGen.cpp.template b/scripts/IFCImporter/IFCReaderGen.cpp.template
new file mode 100644
index 000000000..8cd6658ba
--- /dev/null
+++ b/scripts/IFCImporter/IFCReaderGen.cpp.template
@@ -0,0 +1,79 @@
+/*
+Open Asset Import Library (ASSIMP)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2010, ASSIMP Development Team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the ASSIMP team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the ASSIMP Development Team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** MACHINE-GENERATED by scripts/ICFImporter/CppGenerator.py */
+
+#include "AssimpPCH.h"
+#ifndef ASSIMP_BUILD_NO_IFC_IMPORTER
+
+#include "IFCReaderGen.h"
+
+namespace Assimp {
+using namespace IFC;
+
+namespace {
+
+	typedef EXPRESS::ConversionSchema::SchemaEntry SchemaEntry;
+	const SchemaEntry schema_raw[] =  {
+{schema-static-table}
+	};
+}
+
+// -----------------------------------------------------------------------------------------------------------
+void IFC::GetSchema(EXPRESS::ConversionSchema& out)
+{
+	out = EXPRESS::ConversionSchema(schema_raw);
+}
+
+namespace STEP {
+
+// -----------------------------------------------------------------------------------------------------------
+template <> size_t GenericFill<NotImplemented>(const STEP::DB& db, const LIST& params, NotImplemented* in)
+{
+	return 0;
+}
+
+
+{converter-impl}
+
+} // ! STEP
+} // ! Assimp
+
+#endif
diff --git a/scripts/IFCImporter/IFCReaderGen.h.template b/scripts/IFCImporter/IFCReaderGen.h.template
new file mode 100644
index 000000000..abef2a1ab
--- /dev/null
+++ b/scripts/IFCImporter/IFCReaderGen.h.template
@@ -0,0 +1,91 @@
+/*
+Open Asset Import Library (ASSIMP)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2010, ASSIMP Development Team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the ASSIMP team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the ASSIMP Development Team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** MACHINE-GENERATED by scripts/ICFImporter/CppGenerator.py */
+
+#ifndef INCLUDED_IFC_READER_GEN_H
+#define INCLUDED_IFC_READER_GEN_H
+
+#include "STEPFile.h"
+
+namespace Assimp {
+namespace IFC {
+	using namespace STEP;
+	using namespace STEP::EXPRESS;
+	
+	
+	struct NotImplemented : public ObjectHelper<NotImplemented,0> {
+		
+	};
+	
+
+	// ******************************************************************************
+	// IFC Custom data types
+	// ******************************************************************************
+
+{types}
+
+
+	// ******************************************************************************
+	// IFC Entities
+	// ******************************************************************************
+
+{predefs}
+{entities}
+
+	void GetSchema(EXPRESS::ConversionSchema& out);
+
+} //! IFC
+namespace STEP {
+
+	// ******************************************************************************
+	// Converter stubs
+	// ******************************************************************************
+	
+#define DECL_CONV_STUB(type) template <> size_t GenericFill<IFC::type>(const STEP::DB& db, const EXPRESS::LIST& params, IFC::type* in)
+	
+{converter-decl}
+
+#undef DECL_CONV_STUB
+
+} //! STEP
+} //! Assimp
+
+#endif // INCLUDED_IFC_READER_GEN_H
diff --git a/scripts/IFCImporter/entitylist.txt b/scripts/IFCImporter/entitylist.txt
new file mode 100644
index 000000000..7a303b20d
--- /dev/null
+++ b/scripts/IFCImporter/entitylist.txt
@@ -0,0 +1,184 @@
+# ============================================================================== 
+# List of IFC structures needed by Assimp
+# ============================================================================== 
+# use genentitylist.sh to update this list
+
+# This machine-generated list is not complete, it lacks many intermediate 
+# classes in the inheritance hierarchy. Those are magically augmented by the
+# code generator. Also, the names of all used entities need to be present 
+# in the source code for this to work.
+
+IfcRepresentationMap
+IfcProductRepresentation
+IfcUnitAssignment
+IfcClosedShell
+IfcDoor
+IfcProject
+IfcRepresentationItem
+IfcAxis2Placement
+IfcProduct
+IfcProject
+IfcSIUnit
+IfcColourRgb
+IfcColourOrFactor
+IfcColourRgb
+IfcCartesianPoint
+IfcDirection
+IfcAxis2Placement3D
+IfcAxis2Placement2D
+IfcAxis2Placement
+IfcAxis2Placement3D
+IfcAxis2Placement2D
+IfcRepresentationContext
+IfcGeometricRepresentationContext
+IfcCartesianTransformationOperator
+IfcCartesianTransformationOperator3D
+IfcPolyLoop
+IfcCartesianPoint
+IfcConnectedFaceSet
+IfcFace
+IfcFaceBound
+IfcPolyLoop
+IfcPolyline
+IfcCartesianPoint
+IfcArbitraryClosedProfileDef
+IfcPolyline
+IfcArbitraryOpenProfileDef
+IfcPolyline
+IfcParameterizedProfileDef
+IfcRectangleProfileDef
+IfcExtrudedAreaSolid
+IfcArbitraryClosedProfileDef
+IfcArbitraryOpenProfileDef
+IfcParameterizedProfileDef
+IfcSweptAreaSolid
+IfcExtrudedAreaSolid
+IfcBooleanResult
+IfcBooleanClippingResult
+IfcBooleanResult
+IfcSweptAreaSolid
+IfcRepresentationItem
+IfcStyledItem
+IfcPresentationStyleAssignment
+IfcPresentationStyleSelect
+IfcSurfaceStyle
+IfcSurfaceStyleElementSelect
+IfcSurfaceStyleShading
+IfcSurfaceStyleRendering
+IfcSurfaceStyleWithTextures
+IfcTopologicalRepresentationItem
+IfcConnectedFaceSet
+IfcGeometricRepresentationItem
+IfcShellBasedSurfaceModel
+IfcShell
+IfcConnectedFaceSet
+IfcSweptAreaSolid
+IfcManifoldSolidBrep
+IfcBooleanResult
+IfcRepresentationItem
+IfcTopologicalRepresentationItem
+IfcGeometricRepresentationItem
+IfcObjectPlacement
+IfcLocalPlacement
+IfcMappedItem
+IfcRepresentation
+IfcRepresentationItem
+IfcProduct
+IfcSpace
+IfcRepresentation
+IfcRepresentationItem
+IfcMappedItem
+IfcProduct
+IfcRelContainedInSpatialStructure
+IfcProduct
+IfcRelAggregates
+IfcObjectDefinition
+IfcProduct
+IfcSpatialStructureElement
+IfcRelAggregates
+IfcObjectDefinition
+IfcProject
+IfcRepresentationItem
+IfcAxis2Placement
+IfcProduct
+IfcProject
+IfcSIUnit
+IfcColourRgb
+IfcColourOrFactor
+IfcColourRgb
+IfcCartesianPoint
+IfcDirection
+IfcAxis2Placement3D
+IfcAxis2Placement2D
+IfcAxis2Placement
+IfcAxis2Placement3D
+IfcAxis2Placement2D
+IfcRepresentationContext
+IfcGeometricRepresentationContext
+IfcCartesianTransformationOperator
+IfcCartesianTransformationOperator3D
+IfcPolyLoop
+IfcCartesianPoint
+IfcConnectedFaceSet
+IfcFace
+IfcFaceBound
+IfcPolyLoop
+IfcPolyline
+IfcCartesianPoint
+IfcArbitraryClosedProfileDef
+IfcPolyline
+IfcArbitraryOpenProfileDef
+IfcPolyline
+IfcParameterizedProfileDef
+IfcRectangleProfileDef
+IfcExtrudedAreaSolid
+IfcArbitraryClosedProfileDef
+IfcArbitraryOpenProfileDef
+IfcParameterizedProfileDef
+IfcSweptAreaSolid
+IfcExtrudedAreaSolid
+IfcBooleanResult
+IfcBooleanClippingResult
+IfcBooleanResult
+IfcSweptAreaSolid
+IfcRepresentationItem
+IfcStyledItem
+IfcPresentationStyleAssignment
+IfcPresentationStyleSelect
+IfcSurfaceStyle
+IfcSurfaceStyleElementSelect
+IfcSurfaceStyleShading
+IfcSurfaceStyleRendering
+IfcSurfaceStyleWithTextures
+IfcTopologicalRepresentationItem
+IfcConnectedFaceSet
+IfcGeometricRepresentationItem
+IfcShellBasedSurfaceModel
+IfcShell
+IfcConnectedFaceSet
+IfcSweptAreaSolid
+IfcManifoldSolidBrep
+IfcBooleanResult
+IfcRepresentationItem
+IfcTopologicalRepresentationItem
+IfcGeometricRepresentationItem
+IfcObjectPlacement
+IfcLocalPlacement
+IfcMappedItem
+IfcRepresentation
+IfcRepresentationItem
+IfcProduct
+IfcSpace
+IfcRepresentation
+IfcRepresentationItem
+IfcMappedItem
+IfcProduct
+IfcRelContainedInSpatialStructure
+IfcProduct
+IfcRelAggregates
+IfcObjectDefinition
+IfcProduct
+IfcSpatialStructureElement
+IfcRelAggregates
+IfcObjectDefinition
+
diff --git a/scripts/IFCImporter/genentitylist.sh b/scripts/IFCImporter/genentitylist.sh
new file mode 100644
index 000000000..f90e39a8c
--- /dev/null
+++ b/scripts/IFCImporter/genentitylist.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+grep -E 'IFC::Ifc([A-Z][a-z]*)+' -o ../../code/IFCLoader.cpp | uniq | sed s/IFC::// > output.txt
diff --git a/workspaces/vc9/assimp.vcproj b/workspaces/vc9/assimp.vcproj
index 7d3f0183a..7258409ae 100644
--- a/workspaces/vc9/assimp.vcproj
+++ b/workspaces/vc9/assimp.vcproj
@@ -1942,6 +1942,46 @@
 						>
 					</File>
 				</Filter>
+				<Filter
+					Name="icf"
+					>
+					<File
+						RelativePath="..\..\code\IFCLoader.cpp"
+						>
+					</File>
+					<File
+						RelativePath="..\..\code\IFCLoader.h"
+						>
+					</File>
+					<File
+						RelativePath="..\..\code\IFCReaderGen.cpp"
+						>
+						<FileConfiguration
+							Name="debug|x64"
+							>
+							<Tool
+								Name="VCCLCompilerTool"
+								AdditionalOptions="/bigobj"
+							/>
+						</FileConfiguration>
+					</File>
+					<File
+						RelativePath="..\..\code\IFCReaderGen.h"
+						>
+					</File>
+					<File
+						RelativePath="..\..\code\STEPFile.h"
+						>
+					</File>
+					<File
+						RelativePath="..\..\code\STEPFileReader.cpp"
+						>
+					</File>
+					<File
+						RelativePath="..\..\code\STEPFileReader.h"
+						>
+					</File>
+				</Filter>
 			</Filter>
 			<Filter
 				Name="postprocessing"