diff --git a/src/ifcexpressparser/templates.py b/src/ifcexpressparser/templates.py
index f5aeae8dfa..b08eaf061f 100644
--- a/src/ifcexpressparser/templates.py
+++ b/src/ifcexpressparser/templates.py
@@ -73,7 +73,7 @@ namespace Type {
     } Enum;
     IFC_PARSE_API boost::optional<Enum> Parent(Enum v);
     IFC_PARSE_API Enum FromString(const std::string& s);
-    IFC_PARSE_API std::string ToString(Enum v);
+    IFC_PARSE_API const std::string& ToString(Enum v);
     IFC_PARSE_API bool IsSimple(Enum v);
 }
 
@@ -128,9 +128,9 @@ IfcUtil::IfcBaseClass* %(schema_name)s::SchemaEntity(IfcEntityInstanceData* e) {
     }
 }
 
-std::string Type::ToString(Enum v) {
+const std::string& Type::ToString(Enum v) {
     if (v < 0 || v >= %(max_id)d) throw IfcException("Unable to find find keyword in schema");
-    const char* names[] = { %(type_name_strings)s };
+    static std::string names[] = { %(type_name_strings)s };
     return names[v];
 }
 
diff --git a/src/ifcparse/Ifc2x3.cpp b/src/ifcparse/Ifc2x3.cpp
index 2bf9007814..f8a578a61e 100644
--- a/src/ifcparse/Ifc2x3.cpp
+++ b/src/ifcparse/Ifc2x3.cpp
@@ -812,9 +812,9 @@ IfcUtil::IfcBaseClass* Ifc2x3::SchemaEntity(IfcEntityInstanceData* e) {
     }
 }
 
-std::string Type::ToString(Enum v) {
+const std::string& Type::ToString(Enum v) {
     if (v < 0 || v >= 980) throw IfcException("Unable to find find keyword in schema");
-    const char* names[] = { "Ifc2DCompositeCurve", "IfcAbsorbedDoseMeasure", "IfcAccelerationMeasure", "IfcActionRequest", "IfcActionSourceTypeEnum", "IfcActionTypeEnum", "IfcActor", "IfcActorRole", "IfcActorSelect", "IfcActuatorType", "IfcActuatorTypeEnum", "IfcAddress", "IfcAddressTypeEnum", "IfcAheadOrBehind", "IfcAirTerminalBoxType", "IfcAirTerminalBoxTypeEnum", "IfcAirTerminalType", "IfcAirTerminalTypeEnum", "IfcAirToAirHeatRecoveryType", "IfcAirToAirHeatRecoveryTypeEnum", "IfcAlarmType", "IfcAlarmTypeEnum", "IfcAmountOfSubstanceMeasure", "IfcAnalysisModelTypeEnum", "IfcAnalysisTheoryTypeEnum", "IfcAngularDimension", "IfcAngularVelocityMeasure", "IfcAnnotation", "IfcAnnotationCurveOccurrence", "IfcAnnotationFillArea", "IfcAnnotationFillAreaOccurrence", "IfcAnnotationOccurrence", "IfcAnnotationSurface", "IfcAnnotationSurfaceOccurrence", "IfcAnnotationSymbolOccurrence", "IfcAnnotationTextOccurrence", "IfcApplication", "IfcAppliedValue", "IfcAppliedValueRelationship", "IfcAppliedValueSelect", "IfcApproval", "IfcApprovalActorRelationship", "IfcApprovalPropertyRelationship", "IfcApprovalRelationship", "IfcArbitraryClosedProfileDef", "IfcArbitraryOpenProfileDef", "IfcArbitraryProfileDefWithVoids", "IfcAreaMeasure", "IfcArithmeticOperatorEnum", "IfcAssemblyPlaceEnum", "IfcAsset", "IfcAsymmetricIShapeProfileDef", "IfcAxis1Placement", "IfcAxis2Placement", "IfcAxis2Placement2D", "IfcAxis2Placement3D", "IfcBSplineCurve", "IfcBSplineCurveForm", "IfcBeam", "IfcBeamType", "IfcBeamTypeEnum", "IfcBenchmarkEnum", "IfcBezierCurve", "IfcBlobTexture", "IfcBlock", "IfcBoilerType", "IfcBoilerTypeEnum", "IfcBoolean", "IfcBooleanClippingResult", "IfcBooleanOperand", "IfcBooleanOperator", "IfcBooleanResult", "IfcBoundaryCondition", "IfcBoundaryEdgeCondition", "IfcBoundaryFaceCondition", "IfcBoundaryNodeCondition", "IfcBoundaryNodeConditionWarping", "IfcBoundedCurve", "IfcBoundedSurface", "IfcBoundingBox", "IfcBoxAlignment", "IfcBoxedHalfSpace", "IfcBuilding", "IfcBuildingElement", "IfcBuildingElementComponent", "IfcBuildingElementPart", "IfcBuildingElementProxy", "IfcBuildingElementProxyType", "IfcBuildingElementProxyTypeEnum", "IfcBuildingElementType", "IfcBuildingStorey", "IfcCShapeProfileDef", "IfcCableCarrierFittingType", "IfcCableCarrierFittingTypeEnum", "IfcCableCarrierSegmentType", "IfcCableCarrierSegmentTypeEnum", "IfcCableSegmentType", "IfcCableSegmentTypeEnum", "IfcCalendarDate", "IfcCartesianPoint", "IfcCartesianTransformationOperator", "IfcCartesianTransformationOperator2D", "IfcCartesianTransformationOperator2DnonUniform", "IfcCartesianTransformationOperator3D", "IfcCartesianTransformationOperator3DnonUniform", "IfcCenterLineProfileDef", "IfcChamferEdgeFeature", "IfcChangeActionEnum", "IfcCharacterStyleSelect", "IfcChillerType", "IfcChillerTypeEnum", "IfcCircle", "IfcCircleHollowProfileDef", "IfcCircleProfileDef", "IfcClassification", "IfcClassificationItem", "IfcClassificationItemRelationship", "IfcClassificationNotation", "IfcClassificationNotationFacet", "IfcClassificationNotationSelect", "IfcClassificationReference", "IfcClosedShell", "IfcCoilType", "IfcCoilTypeEnum", "IfcColour", "IfcColourOrFactor", "IfcColourRgb", "IfcColourSpecification", "IfcColumn", "IfcColumnType", "IfcColumnTypeEnum", "IfcComplexNumber", "IfcComplexProperty", "IfcCompositeCurve", "IfcCompositeCurveSegment", "IfcCompositeProfileDef", "IfcCompoundPlaneAngleMeasure", "IfcCompressorType", "IfcCompressorTypeEnum", "IfcCondenserType", "IfcCondenserTypeEnum", "IfcCondition", "IfcConditionCriterion", "IfcConditionCriterionSelect", "IfcConic", "IfcConnectedFaceSet", "IfcConnectionCurveGeometry", "IfcConnectionGeometry", "IfcConnectionPointEccentricity", "IfcConnectionPointGeometry", "IfcConnectionPortGeometry", "IfcConnectionSurfaceGeometry", "IfcConnectionTypeEnum", "IfcConstraint", "IfcConstraintAggregationRelationship", "IfcConstraintClassificationRelationship", "IfcConstraintEnum", "IfcConstraintRelationship", "IfcConstructionEquipmentResource", "IfcConstructionMaterialResource", "IfcConstructionProductResource", "IfcConstructionResource", "IfcContextDependentMeasure", "IfcContextDependentUnit", "IfcControl", "IfcControllerType", "IfcControllerTypeEnum", "IfcConversionBasedUnit", "IfcCooledBeamType", "IfcCooledBeamTypeEnum", "IfcCoolingTowerType", "IfcCoolingTowerTypeEnum", "IfcCoordinatedUniversalTimeOffset", "IfcCostItem", "IfcCostSchedule", "IfcCostScheduleTypeEnum", "IfcCostValue", "IfcCountMeasure", "IfcCovering", "IfcCoveringType", "IfcCoveringTypeEnum", "IfcCraneRailAShapeProfileDef", "IfcCraneRailFShapeProfileDef", "IfcCrewResource", "IfcCsgPrimitive3D", "IfcCsgSelect", "IfcCsgSolid", "IfcCurrencyEnum", "IfcCurrencyRelationship", "IfcCurtainWall", "IfcCurtainWallType", "IfcCurtainWallTypeEnum", "IfcCurvatureMeasure", "IfcCurve", "IfcCurveBoundedPlane", "IfcCurveFontOrScaledCurveFontSelect", "IfcCurveOrEdgeCurve", "IfcCurveStyle", "IfcCurveStyleFont", "IfcCurveStyleFontAndScaling", "IfcCurveStyleFontPattern", "IfcCurveStyleFontSelect", "IfcDamperType", "IfcDamperTypeEnum", "IfcDataOriginEnum", "IfcDateAndTime", "IfcDateTimeSelect", "IfcDayInMonthNumber", "IfcDaylightSavingHour", "IfcDefinedSymbol", "IfcDefinedSymbolSelect", "IfcDerivedMeasureValue", "IfcDerivedProfileDef", "IfcDerivedUnit", "IfcDerivedUnitElement", "IfcDerivedUnitEnum", "IfcDescriptiveMeasure", "IfcDiameterDimension", "IfcDimensionCalloutRelationship", "IfcDimensionCount", "IfcDimensionCurve", "IfcDimensionCurveDirectedCallout", "IfcDimensionCurveTerminator", "IfcDimensionExtentUsage", "IfcDimensionPair", "IfcDimensionalExponents", "IfcDirection", "IfcDirectionSenseEnum", "IfcDiscreteAccessory", "IfcDiscreteAccessoryType", "IfcDistributionChamberElement", "IfcDistributionChamberElementType", "IfcDistributionChamberElementTypeEnum", "IfcDistributionControlElement", "IfcDistributionControlElementType", "IfcDistributionElement", "IfcDistributionElementType", "IfcDistributionFlowElement", "IfcDistributionFlowElementType", "IfcDistributionPort", "IfcDocumentConfidentialityEnum", "IfcDocumentElectronicFormat", "IfcDocumentInformation", "IfcDocumentInformationRelationship", "IfcDocumentReference", "IfcDocumentSelect", "IfcDocumentStatusEnum", "IfcDoor", "IfcDoorLiningProperties", "IfcDoorPanelOperationEnum", "IfcDoorPanelPositionEnum", "IfcDoorPanelProperties", "IfcDoorStyle", "IfcDoorStyleConstructionEnum", "IfcDoorStyleOperationEnum", "IfcDoseEquivalentMeasure", "IfcDraughtingCallout", "IfcDraughtingCalloutElement", "IfcDraughtingCalloutRelationship", "IfcDraughtingPreDefinedColour", "IfcDraughtingPreDefinedCurveFont", "IfcDraughtingPreDefinedTextFont", "IfcDuctFittingType", "IfcDuctFittingTypeEnum", "IfcDuctSegmentType", "IfcDuctSegmentTypeEnum", "IfcDuctSilencerType", "IfcDuctSilencerTypeEnum", "IfcDynamicViscosityMeasure", "IfcEdge", "IfcEdgeCurve", "IfcEdgeFeature", "IfcEdgeLoop", "IfcElectricApplianceType", "IfcElectricApplianceTypeEnum", "IfcElectricCapacitanceMeasure", "IfcElectricChargeMeasure", "IfcElectricConductanceMeasure", "IfcElectricCurrentEnum", "IfcElectricCurrentMeasure", "IfcElectricDistributionPoint", "IfcElectricDistributionPointFunctionEnum", "IfcElectricFlowStorageDeviceType", "IfcElectricFlowStorageDeviceTypeEnum", "IfcElectricGeneratorType", "IfcElectricGeneratorTypeEnum", "IfcElectricHeaterType", "IfcElectricHeaterTypeEnum", "IfcElectricMotorType", "IfcElectricMotorTypeEnum", "IfcElectricResistanceMeasure", "IfcElectricTimeControlType", "IfcElectricTimeControlTypeEnum", "IfcElectricVoltageMeasure", "IfcElectricalBaseProperties", "IfcElectricalCircuit", "IfcElectricalElement", "IfcElement", "IfcElementAssembly", "IfcElementAssemblyTypeEnum", "IfcElementComponent", "IfcElementComponentType", "IfcElementCompositionEnum", "IfcElementQuantity", "IfcElementType", "IfcElementarySurface", "IfcEllipse", "IfcEllipseProfileDef", "IfcEnergyConversionDevice", "IfcEnergyConversionDeviceType", "IfcEnergyMeasure", "IfcEnergyProperties", "IfcEnergySequenceEnum", "IfcEnvironmentalImpactCategoryEnum", "IfcEnvironmentalImpactValue", "IfcEquipmentElement", "IfcEquipmentStandard", "IfcEvaporativeCoolerType", "IfcEvaporativeCoolerTypeEnum", "IfcEvaporatorType", "IfcEvaporatorTypeEnum", "IfcExtendedMaterialProperties", "IfcExternalReference", "IfcExternallyDefinedHatchStyle", "IfcExternallyDefinedSurfaceStyle", "IfcExternallyDefinedSymbol", "IfcExternallyDefinedTextFont", "IfcExtrudedAreaSolid", "IfcFace", "IfcFaceBasedSurfaceModel", "IfcFaceBound", "IfcFaceOuterBound", "IfcFaceSurface", "IfcFacetedBrep", "IfcFacetedBrepWithVoids", "IfcFailureConnectionCondition", "IfcFanType", "IfcFanTypeEnum", "IfcFastener", "IfcFastenerType", "IfcFeatureElement", "IfcFeatureElementAddition", "IfcFeatureElementSubtraction", "IfcFillAreaStyle", "IfcFillAreaStyleHatching", "IfcFillAreaStyleTileShapeSelect", "IfcFillAreaStyleTileSymbolWithStyle", "IfcFillAreaStyleTiles", "IfcFillStyleSelect", "IfcFilterType", "IfcFilterTypeEnum", "IfcFireSuppressionTerminalType", "IfcFireSuppressionTerminalTypeEnum", "IfcFlowController", "IfcFlowControllerType", "IfcFlowDirectionEnum", "IfcFlowFitting", "IfcFlowFittingType", "IfcFlowInstrumentType", "IfcFlowInstrumentTypeEnum", "IfcFlowMeterType", "IfcFlowMeterTypeEnum", "IfcFlowMovingDevice", "IfcFlowMovingDeviceType", "IfcFlowSegment", "IfcFlowSegmentType", "IfcFlowStorageDevice", "IfcFlowStorageDeviceType", "IfcFlowTerminal", "IfcFlowTerminalType", "IfcFlowTreatmentDevice", "IfcFlowTreatmentDeviceType", "IfcFluidFlowProperties", "IfcFontStyle", "IfcFontVariant", "IfcFontWeight", "IfcFooting", "IfcFootingTypeEnum", "IfcForceMeasure", "IfcFrequencyMeasure", "IfcFuelProperties", "IfcFurnishingElement", "IfcFurnishingElementType", "IfcFurnitureStandard", "IfcFurnitureType", "IfcGasTerminalType", "IfcGasTerminalTypeEnum", "IfcGeneralMaterialProperties", "IfcGeneralProfileProperties", "IfcGeometricCurveSet", "IfcGeometricProjectionEnum", "IfcGeometricRepresentationContext", "IfcGeometricRepresentationItem", "IfcGeometricRepresentationSubContext", "IfcGeometricSet", "IfcGeometricSetSelect", "IfcGlobalOrLocalEnum", "IfcGloballyUniqueId", "IfcGrid", "IfcGridAxis", "IfcGridPlacement", "IfcGroup", "IfcHalfSpaceSolid", "IfcHatchLineDistanceSelect", "IfcHeatExchangerType", "IfcHeatExchangerTypeEnum", "IfcHeatFluxDensityMeasure", "IfcHeatingValueMeasure", "IfcHourInDay", "IfcHumidifierType", "IfcHumidifierTypeEnum", "IfcHygroscopicMaterialProperties", "IfcIShapeProfileDef", "IfcIdentifier", "IfcIlluminanceMeasure", "IfcImageTexture", "IfcInductanceMeasure", "IfcInteger", "IfcIntegerCountRateMeasure", "IfcInternalOrExternalEnum", "IfcInventory", "IfcInventoryTypeEnum", "IfcIonConcentrationMeasure", "IfcIrregularTimeSeries", "IfcIrregularTimeSeriesValue", "IfcIsothermalMoistureCapacityMeasure", "IfcJunctionBoxType", "IfcJunctionBoxTypeEnum", "IfcKinematicViscosityMeasure", "IfcLShapeProfileDef", "IfcLabel", "IfcLaborResource", "IfcLampType", "IfcLampTypeEnum", "IfcLayerSetDirectionEnum", "IfcLayeredItem", "IfcLengthMeasure", "IfcLibraryInformation", "IfcLibraryReference", "IfcLibrarySelect", "IfcLightDistributionCurveEnum", "IfcLightDistributionData", "IfcLightDistributionDataSourceSelect", "IfcLightEmissionSourceEnum", "IfcLightFixtureType", "IfcLightFixtureTypeEnum", "IfcLightIntensityDistribution", "IfcLightSource", "IfcLightSourceAmbient", "IfcLightSourceDirectional", "IfcLightSourceGoniometric", "IfcLightSourcePositional", "IfcLightSourceSpot", "IfcLine", "IfcLinearDimension", "IfcLinearForceMeasure", "IfcLinearMomentMeasure", "IfcLinearStiffnessMeasure", "IfcLinearVelocityMeasure", "IfcLoadGroupTypeEnum", "IfcLocalPlacement", "IfcLocalTime", "IfcLogical", "IfcLogicalOperatorEnum", "IfcLoop", "IfcLuminousFluxMeasure", "IfcLuminousIntensityDistributionMeasure", "IfcLuminousIntensityMeasure", "IfcMagneticFluxDensityMeasure", "IfcMagneticFluxMeasure", "IfcManifoldSolidBrep", "IfcMappedItem", "IfcMassDensityMeasure", "IfcMassFlowRateMeasure", "IfcMassMeasure", "IfcMassPerLengthMeasure", "IfcMaterial", "IfcMaterialClassificationRelationship", "IfcMaterialDefinitionRepresentation", "IfcMaterialLayer", "IfcMaterialLayerSet", "IfcMaterialLayerSetUsage", "IfcMaterialList", "IfcMaterialProperties", "IfcMaterialSelect", "IfcMeasureValue", "IfcMeasureWithUnit", "IfcMechanicalConcreteMaterialProperties", "IfcMechanicalFastener", "IfcMechanicalFastenerType", "IfcMechanicalMaterialProperties", "IfcMechanicalSteelMaterialProperties", "IfcMember", "IfcMemberType", "IfcMemberTypeEnum", "IfcMetric", "IfcMetricValueSelect", "IfcMinuteInHour", "IfcModulusOfElasticityMeasure", "IfcModulusOfLinearSubgradeReactionMeasure", "IfcModulusOfRotationalSubgradeReactionMeasure", "IfcModulusOfSubgradeReactionMeasure", "IfcMoistureDiffusivityMeasure", "IfcMolecularWeightMeasure", "IfcMomentOfInertiaMeasure", "IfcMonetaryMeasure", "IfcMonetaryUnit", "IfcMonthInYearNumber", "IfcMotorConnectionType", "IfcMotorConnectionTypeEnum", "IfcMove", "IfcNamedUnit", "IfcNormalisedRatioMeasure", "IfcNullStyle", "IfcNumericMeasure", "IfcObject", "IfcObjectDefinition", "IfcObjectPlacement", "IfcObjectReferenceSelect", "IfcObjectTypeEnum", "IfcObjective", "IfcObjectiveEnum", "IfcOccupant", "IfcOccupantTypeEnum", "IfcOffsetCurve2D", "IfcOffsetCurve3D", "IfcOneDirectionRepeatFactor", "IfcOpenShell", "IfcOpeningElement", "IfcOpticalMaterialProperties", "IfcOrderAction", "IfcOrganization", "IfcOrganizationRelationship", "IfcOrientationSelect", "IfcOrientedEdge", "IfcOutletType", "IfcOutletTypeEnum", "IfcOwnerHistory", "IfcPHMeasure", "IfcParameterValue", "IfcParameterizedProfileDef", "IfcPath", "IfcPerformanceHistory", "IfcPermeableCoveringOperationEnum", "IfcPermeableCoveringProperties", "IfcPermit", "IfcPerson", "IfcPersonAndOrganization", "IfcPhysicalComplexQuantity", "IfcPhysicalOrVirtualEnum", "IfcPhysicalQuantity", "IfcPhysicalSimpleQuantity", "IfcPile", "IfcPileConstructionEnum", "IfcPileTypeEnum", "IfcPipeFittingType", "IfcPipeFittingTypeEnum", "IfcPipeSegmentType", "IfcPipeSegmentTypeEnum", "IfcPixelTexture", "IfcPlacement", "IfcPlanarBox", "IfcPlanarExtent", "IfcPlanarForceMeasure", "IfcPlane", "IfcPlaneAngleMeasure", "IfcPlate", "IfcPlateType", "IfcPlateTypeEnum", "IfcPoint", "IfcPointOnCurve", "IfcPointOnSurface", "IfcPointOrVertexPoint", "IfcPolyLoop", "IfcPolygonalBoundedHalfSpace", "IfcPolyline", "IfcPort", "IfcPositiveLengthMeasure", "IfcPositivePlaneAngleMeasure", "IfcPositiveRatioMeasure", "IfcPostalAddress", "IfcPowerMeasure", "IfcPreDefinedColour", "IfcPreDefinedCurveFont", "IfcPreDefinedDimensionSymbol", "IfcPreDefinedItem", "IfcPreDefinedPointMarkerSymbol", "IfcPreDefinedSymbol", "IfcPreDefinedTerminatorSymbol", "IfcPreDefinedTextFont", "IfcPresentableText", "IfcPresentationLayerAssignment", "IfcPresentationLayerWithStyle", "IfcPresentationStyle", "IfcPresentationStyleAssignment", "IfcPresentationStyleSelect", "IfcPressureMeasure", "IfcProcedure", "IfcProcedureTypeEnum", "IfcProcess", "IfcProduct", "IfcProductDefinitionShape", "IfcProductRepresentation", "IfcProductsOfCombustionProperties", "IfcProfileDef", "IfcProfileProperties", "IfcProfileTypeEnum", "IfcProject", "IfcProjectOrder", "IfcProjectOrderRecord", "IfcProjectOrderRecordTypeEnum", "IfcProjectOrderTypeEnum", "IfcProjectedOrTrueLengthEnum", "IfcProjectionCurve", "IfcProjectionElement", "IfcProperty", "IfcPropertyBoundedValue", "IfcPropertyConstraintRelationship", "IfcPropertyDefinition", "IfcPropertyDependencyRelationship", "IfcPropertyEnumeratedValue", "IfcPropertyEnumeration", "IfcPropertyListValue", "IfcPropertyReferenceValue", "IfcPropertySet", "IfcPropertySetDefinition", "IfcPropertySingleValue", "IfcPropertySourceEnum", "IfcPropertyTableValue", "IfcProtectiveDeviceType", "IfcProtectiveDeviceTypeEnum", "IfcProxy", "IfcPumpType", "IfcPumpTypeEnum", "IfcQuantityArea", "IfcQuantityCount", "IfcQuantityLength", "IfcQuantityTime", "IfcQuantityVolume", "IfcQuantityWeight", "IfcRadioActivityMeasure", "IfcRadiusDimension", "IfcRailing", "IfcRailingType", "IfcRailingTypeEnum", "IfcRamp", "IfcRampFlight", "IfcRampFlightType", "IfcRampFlightTypeEnum", "IfcRampTypeEnum", "IfcRatioMeasure", "IfcRationalBezierCurve", "IfcReal", "IfcRectangleHollowProfileDef", "IfcRectangleProfileDef", "IfcRectangularPyramid", "IfcRectangularTrimmedSurface", "IfcReferencesValueDocument", "IfcReflectanceMethodEnum", "IfcRegularTimeSeries", "IfcReinforcementBarProperties", "IfcReinforcementDefinitionProperties", "IfcReinforcingBar", "IfcReinforcingBarRoleEnum", "IfcReinforcingBarSurfaceEnum", "IfcReinforcingElement", "IfcReinforcingMesh", "IfcRelAggregates", "IfcRelAssigns", "IfcRelAssignsTasks", "IfcRelAssignsToActor", "IfcRelAssignsToControl", "IfcRelAssignsToGroup", "IfcRelAssignsToProcess", "IfcRelAssignsToProduct", "IfcRelAssignsToProjectOrder", "IfcRelAssignsToResource", "IfcRelAssociates", "IfcRelAssociatesAppliedValue", "IfcRelAssociatesApproval", "IfcRelAssociatesClassification", "IfcRelAssociatesConstraint", "IfcRelAssociatesDocument", "IfcRelAssociatesLibrary", "IfcRelAssociatesMaterial", "IfcRelAssociatesProfileProperties", "IfcRelConnects", "IfcRelConnectsElements", "IfcRelConnectsPathElements", "IfcRelConnectsPortToElement", "IfcRelConnectsPorts", "IfcRelConnectsStructuralActivity", "IfcRelConnectsStructuralElement", "IfcRelConnectsStructuralMember", "IfcRelConnectsWithEccentricity", "IfcRelConnectsWithRealizingElements", "IfcRelContainedInSpatialStructure", "IfcRelCoversBldgElements", "IfcRelCoversSpaces", "IfcRelDecomposes", "IfcRelDefines", "IfcRelDefinesByProperties", "IfcRelDefinesByType", "IfcRelFillsElement", "IfcRelFlowControlElements", "IfcRelInteractionRequirements", "IfcRelNests", "IfcRelOccupiesSpaces", "IfcRelOverridesProperties", "IfcRelProjectsElement", "IfcRelReferencedInSpatialStructure", "IfcRelSchedulesCostItems", "IfcRelSequence", "IfcRelServicesBuildings", "IfcRelSpaceBoundary", "IfcRelVoidsElement", "IfcRelationship", "IfcRelaxation", "IfcRepresentation", "IfcRepresentationContext", "IfcRepresentationItem", "IfcRepresentationMap", "IfcResource", "IfcResourceConsumptionEnum", "IfcRevolvedAreaSolid", "IfcRibPlateDirectionEnum", "IfcRibPlateProfileProperties", "IfcRightCircularCone", "IfcRightCircularCylinder", "IfcRoleEnum", "IfcRoof", "IfcRoofTypeEnum", "IfcRoot", "IfcRotationalFrequencyMeasure", "IfcRotationalMassMeasure", "IfcRotationalStiffnessMeasure", "IfcRoundedEdgeFeature", "IfcRoundedRectangleProfileDef", "IfcSIPrefix", "IfcSIUnit", "IfcSIUnitName", "IfcSanitaryTerminalType", "IfcSanitaryTerminalTypeEnum", "IfcScheduleTimeControl", "IfcSecondInMinute", "IfcSectionModulusMeasure", "IfcSectionProperties", "IfcSectionReinforcementProperties", "IfcSectionTypeEnum", "IfcSectionalAreaIntegralMeasure", "IfcSectionedSpine", "IfcSensorType", "IfcSensorTypeEnum", "IfcSequenceEnum", "IfcServiceLife", "IfcServiceLifeFactor", "IfcServiceLifeFactorTypeEnum", "IfcServiceLifeTypeEnum", "IfcShapeAspect", "IfcShapeModel", "IfcShapeRepresentation", "IfcShearModulusMeasure", "IfcShell", "IfcShellBasedSurfaceModel", "IfcSimpleProperty", "IfcSimpleValue", "IfcSite", "IfcSizeSelect", "IfcSlab", "IfcSlabType", "IfcSlabTypeEnum", "IfcSlippageConnectionCondition", "IfcSolidAngleMeasure", "IfcSolidModel", "IfcSoundPowerMeasure", "IfcSoundPressureMeasure", "IfcSoundProperties", "IfcSoundScaleEnum", "IfcSoundValue", "IfcSpace", "IfcSpaceHeaterType", "IfcSpaceHeaterTypeEnum", "IfcSpaceProgram", "IfcSpaceThermalLoadProperties", "IfcSpaceType", "IfcSpaceTypeEnum", "IfcSpatialStructureElement", "IfcSpatialStructureElementType", "IfcSpecificHeatCapacityMeasure", "IfcSpecularExponent", "IfcSpecularHighlightSelect", "IfcSpecularRoughness", "IfcSphere", "IfcStackTerminalType", "IfcStackTerminalTypeEnum", "IfcStair", "IfcStairFlight", "IfcStairFlightType", "IfcStairFlightTypeEnum", "IfcStairTypeEnum", "IfcStateEnum", "IfcStructuralAction", "IfcStructuralActivity", "IfcStructuralActivityAssignmentSelect", "IfcStructuralAnalysisModel", "IfcStructuralConnection", "IfcStructuralConnectionCondition", "IfcStructuralCurveConnection", "IfcStructuralCurveMember", "IfcStructuralCurveMemberVarying", "IfcStructuralCurveTypeEnum", "IfcStructuralItem", "IfcStructuralLinearAction", "IfcStructuralLinearActionVarying", "IfcStructuralLoad", "IfcStructuralLoadGroup", "IfcStructuralLoadLinearForce", "IfcStructuralLoadPlanarForce", "IfcStructuralLoadSingleDisplacement", "IfcStructuralLoadSingleDisplacementDistortion", "IfcStructuralLoadSingleForce", "IfcStructuralLoadSingleForceWarping", "IfcStructuralLoadStatic", "IfcStructuralLoadTemperature", "IfcStructuralMember", "IfcStructuralPlanarAction", "IfcStructuralPlanarActionVarying", "IfcStructuralPointAction", "IfcStructuralPointConnection", "IfcStructuralPointReaction", "IfcStructuralProfileProperties", "IfcStructuralReaction", "IfcStructuralResultGroup", "IfcStructuralSteelProfileProperties", "IfcStructuralSurfaceConnection", "IfcStructuralSurfaceMember", "IfcStructuralSurfaceMemberVarying", "IfcStructuralSurfaceTypeEnum", "IfcStructuredDimensionCallout", "IfcStyleModel", "IfcStyledItem", "IfcStyledRepresentation", "IfcSubContractResource", "IfcSubedge", "IfcSurface", "IfcSurfaceCurveSweptAreaSolid", "IfcSurfaceOfLinearExtrusion", "IfcSurfaceOfRevolution", "IfcSurfaceOrFaceSurface", "IfcSurfaceSide", "IfcSurfaceStyle", "IfcSurfaceStyleElementSelect", "IfcSurfaceStyleLighting", "IfcSurfaceStyleRefraction", "IfcSurfaceStyleRendering", "IfcSurfaceStyleShading", "IfcSurfaceStyleWithTextures", "IfcSurfaceTexture", "IfcSurfaceTextureEnum", "IfcSweptAreaSolid", "IfcSweptDiskSolid", "IfcSweptSurface", "IfcSwitchingDeviceType", "IfcSwitchingDeviceTypeEnum", "IfcSymbolStyle", "IfcSymbolStyleSelect", "IfcSystem", "IfcSystemFurnitureElementType", "IfcTShapeProfileDef", "IfcTable", "IfcTableRow", "IfcTankType", "IfcTankTypeEnum", "IfcTask", "IfcTelecomAddress", "IfcTemperatureGradientMeasure", "IfcTendon", "IfcTendonAnchor", "IfcTendonTypeEnum", "IfcTerminatorSymbol", "IfcText", "IfcTextAlignment", "IfcTextDecoration", "IfcTextFontName", "IfcTextFontSelect", "IfcTextLiteral", "IfcTextLiteralWithExtent", "IfcTextPath", "IfcTextStyle", "IfcTextStyleFontModel", "IfcTextStyleForDefinedFont", "IfcTextStyleSelect", "IfcTextStyleTextModel", "IfcTextStyleWithBoxCharacteristics", "IfcTextTransformation", "IfcTextureCoordinate", "IfcTextureCoordinateGenerator", "IfcTextureMap", "IfcTextureVertex", "IfcThermalAdmittanceMeasure", "IfcThermalConductivityMeasure", "IfcThermalExpansionCoefficientMeasure", "IfcThermalLoadSourceEnum", "IfcThermalLoadTypeEnum", "IfcThermalMaterialProperties", "IfcThermalResistanceMeasure", "IfcThermalTransmittanceMeasure", "IfcThermodynamicTemperatureMeasure", "IfcTimeMeasure", "IfcTimeSeries", "IfcTimeSeriesDataTypeEnum", "IfcTimeSeriesReferenceRelationship", "IfcTimeSeriesSchedule", "IfcTimeSeriesScheduleTypeEnum", "IfcTimeSeriesValue", "IfcTimeStamp", "IfcTopologicalRepresentationItem", "IfcTopologyRepresentation", "IfcTorqueMeasure", "IfcTransformerType", "IfcTransformerTypeEnum", "IfcTransitionCode", "IfcTransportElement", "IfcTransportElementType", "IfcTransportElementTypeEnum", "IfcTrapeziumProfileDef", "IfcTrimmedCurve", "IfcTrimmingPreference", "IfcTrimmingSelect", "IfcTubeBundleType", "IfcTubeBundleTypeEnum", "IfcTwoDirectionRepeatFactor", "IfcTypeObject", "IfcTypeProduct", "IfcUShapeProfileDef", "IfcUnit", "IfcUnitAssignment", "IfcUnitEnum", "IfcUnitaryEquipmentType", "IfcUnitaryEquipmentTypeEnum", "IfcValue", "IfcValveType", "IfcValveTypeEnum", "IfcVaporPermeabilityMeasure", "IfcVector", "IfcVectorOrDirection", "IfcVertex", "IfcVertexBasedTextureMap", "IfcVertexLoop", "IfcVertexPoint", "IfcVibrationIsolatorType", "IfcVibrationIsolatorTypeEnum", "IfcVirtualElement", "IfcVirtualGridIntersection", "IfcVolumeMeasure", "IfcVolumetricFlowRateMeasure", "IfcWall", "IfcWallStandardCase", "IfcWallType", "IfcWallTypeEnum", "IfcWarpingConstantMeasure", "IfcWarpingMomentMeasure", "IfcWasteTerminalType", "IfcWasteTerminalTypeEnum", "IfcWaterProperties", "IfcWindow", "IfcWindowLiningProperties", "IfcWindowPanelOperationEnum", "IfcWindowPanelPositionEnum", "IfcWindowPanelProperties", "IfcWindowStyle", "IfcWindowStyleConstructionEnum", "IfcWindowStyleOperationEnum", "IfcWorkControl", "IfcWorkControlTypeEnum", "IfcWorkPlan", "IfcWorkSchedule", "IfcYearNumber", "IfcZShapeProfileDef", "IfcZone" };
+    static std::string names[] = { "Ifc2DCompositeCurve", "IfcAbsorbedDoseMeasure", "IfcAccelerationMeasure", "IfcActionRequest", "IfcActionSourceTypeEnum", "IfcActionTypeEnum", "IfcActor", "IfcActorRole", "IfcActorSelect", "IfcActuatorType", "IfcActuatorTypeEnum", "IfcAddress", "IfcAddressTypeEnum", "IfcAheadOrBehind", "IfcAirTerminalBoxType", "IfcAirTerminalBoxTypeEnum", "IfcAirTerminalType", "IfcAirTerminalTypeEnum", "IfcAirToAirHeatRecoveryType", "IfcAirToAirHeatRecoveryTypeEnum", "IfcAlarmType", "IfcAlarmTypeEnum", "IfcAmountOfSubstanceMeasure", "IfcAnalysisModelTypeEnum", "IfcAnalysisTheoryTypeEnum", "IfcAngularDimension", "IfcAngularVelocityMeasure", "IfcAnnotation", "IfcAnnotationCurveOccurrence", "IfcAnnotationFillArea", "IfcAnnotationFillAreaOccurrence", "IfcAnnotationOccurrence", "IfcAnnotationSurface", "IfcAnnotationSurfaceOccurrence", "IfcAnnotationSymbolOccurrence", "IfcAnnotationTextOccurrence", "IfcApplication", "IfcAppliedValue", "IfcAppliedValueRelationship", "IfcAppliedValueSelect", "IfcApproval", "IfcApprovalActorRelationship", "IfcApprovalPropertyRelationship", "IfcApprovalRelationship", "IfcArbitraryClosedProfileDef", "IfcArbitraryOpenProfileDef", "IfcArbitraryProfileDefWithVoids", "IfcAreaMeasure", "IfcArithmeticOperatorEnum", "IfcAssemblyPlaceEnum", "IfcAsset", "IfcAsymmetricIShapeProfileDef", "IfcAxis1Placement", "IfcAxis2Placement", "IfcAxis2Placement2D", "IfcAxis2Placement3D", "IfcBSplineCurve", "IfcBSplineCurveForm", "IfcBeam", "IfcBeamType", "IfcBeamTypeEnum", "IfcBenchmarkEnum", "IfcBezierCurve", "IfcBlobTexture", "IfcBlock", "IfcBoilerType", "IfcBoilerTypeEnum", "IfcBoolean", "IfcBooleanClippingResult", "IfcBooleanOperand", "IfcBooleanOperator", "IfcBooleanResult", "IfcBoundaryCondition", "IfcBoundaryEdgeCondition", "IfcBoundaryFaceCondition", "IfcBoundaryNodeCondition", "IfcBoundaryNodeConditionWarping", "IfcBoundedCurve", "IfcBoundedSurface", "IfcBoundingBox", "IfcBoxAlignment", "IfcBoxedHalfSpace", "IfcBuilding", "IfcBuildingElement", "IfcBuildingElementComponent", "IfcBuildingElementPart", "IfcBuildingElementProxy", "IfcBuildingElementProxyType", "IfcBuildingElementProxyTypeEnum", "IfcBuildingElementType", "IfcBuildingStorey", "IfcCShapeProfileDef", "IfcCableCarrierFittingType", "IfcCableCarrierFittingTypeEnum", "IfcCableCarrierSegmentType", "IfcCableCarrierSegmentTypeEnum", "IfcCableSegmentType", "IfcCableSegmentTypeEnum", "IfcCalendarDate", "IfcCartesianPoint", "IfcCartesianTransformationOperator", "IfcCartesianTransformationOperator2D", "IfcCartesianTransformationOperator2DnonUniform", "IfcCartesianTransformationOperator3D", "IfcCartesianTransformationOperator3DnonUniform", "IfcCenterLineProfileDef", "IfcChamferEdgeFeature", "IfcChangeActionEnum", "IfcCharacterStyleSelect", "IfcChillerType", "IfcChillerTypeEnum", "IfcCircle", "IfcCircleHollowProfileDef", "IfcCircleProfileDef", "IfcClassification", "IfcClassificationItem", "IfcClassificationItemRelationship", "IfcClassificationNotation", "IfcClassificationNotationFacet", "IfcClassificationNotationSelect", "IfcClassificationReference", "IfcClosedShell", "IfcCoilType", "IfcCoilTypeEnum", "IfcColour", "IfcColourOrFactor", "IfcColourRgb", "IfcColourSpecification", "IfcColumn", "IfcColumnType", "IfcColumnTypeEnum", "IfcComplexNumber", "IfcComplexProperty", "IfcCompositeCurve", "IfcCompositeCurveSegment", "IfcCompositeProfileDef", "IfcCompoundPlaneAngleMeasure", "IfcCompressorType", "IfcCompressorTypeEnum", "IfcCondenserType", "IfcCondenserTypeEnum", "IfcCondition", "IfcConditionCriterion", "IfcConditionCriterionSelect", "IfcConic", "IfcConnectedFaceSet", "IfcConnectionCurveGeometry", "IfcConnectionGeometry", "IfcConnectionPointEccentricity", "IfcConnectionPointGeometry", "IfcConnectionPortGeometry", "IfcConnectionSurfaceGeometry", "IfcConnectionTypeEnum", "IfcConstraint", "IfcConstraintAggregationRelationship", "IfcConstraintClassificationRelationship", "IfcConstraintEnum", "IfcConstraintRelationship", "IfcConstructionEquipmentResource", "IfcConstructionMaterialResource", "IfcConstructionProductResource", "IfcConstructionResource", "IfcContextDependentMeasure", "IfcContextDependentUnit", "IfcControl", "IfcControllerType", "IfcControllerTypeEnum", "IfcConversionBasedUnit", "IfcCooledBeamType", "IfcCooledBeamTypeEnum", "IfcCoolingTowerType", "IfcCoolingTowerTypeEnum", "IfcCoordinatedUniversalTimeOffset", "IfcCostItem", "IfcCostSchedule", "IfcCostScheduleTypeEnum", "IfcCostValue", "IfcCountMeasure", "IfcCovering", "IfcCoveringType", "IfcCoveringTypeEnum", "IfcCraneRailAShapeProfileDef", "IfcCraneRailFShapeProfileDef", "IfcCrewResource", "IfcCsgPrimitive3D", "IfcCsgSelect", "IfcCsgSolid", "IfcCurrencyEnum", "IfcCurrencyRelationship", "IfcCurtainWall", "IfcCurtainWallType", "IfcCurtainWallTypeEnum", "IfcCurvatureMeasure", "IfcCurve", "IfcCurveBoundedPlane", "IfcCurveFontOrScaledCurveFontSelect", "IfcCurveOrEdgeCurve", "IfcCurveStyle", "IfcCurveStyleFont", "IfcCurveStyleFontAndScaling", "IfcCurveStyleFontPattern", "IfcCurveStyleFontSelect", "IfcDamperType", "IfcDamperTypeEnum", "IfcDataOriginEnum", "IfcDateAndTime", "IfcDateTimeSelect", "IfcDayInMonthNumber", "IfcDaylightSavingHour", "IfcDefinedSymbol", "IfcDefinedSymbolSelect", "IfcDerivedMeasureValue", "IfcDerivedProfileDef", "IfcDerivedUnit", "IfcDerivedUnitElement", "IfcDerivedUnitEnum", "IfcDescriptiveMeasure", "IfcDiameterDimension", "IfcDimensionCalloutRelationship", "IfcDimensionCount", "IfcDimensionCurve", "IfcDimensionCurveDirectedCallout", "IfcDimensionCurveTerminator", "IfcDimensionExtentUsage", "IfcDimensionPair", "IfcDimensionalExponents", "IfcDirection", "IfcDirectionSenseEnum", "IfcDiscreteAccessory", "IfcDiscreteAccessoryType", "IfcDistributionChamberElement", "IfcDistributionChamberElementType", "IfcDistributionChamberElementTypeEnum", "IfcDistributionControlElement", "IfcDistributionControlElementType", "IfcDistributionElement", "IfcDistributionElementType", "IfcDistributionFlowElement", "IfcDistributionFlowElementType", "IfcDistributionPort", "IfcDocumentConfidentialityEnum", "IfcDocumentElectronicFormat", "IfcDocumentInformation", "IfcDocumentInformationRelationship", "IfcDocumentReference", "IfcDocumentSelect", "IfcDocumentStatusEnum", "IfcDoor", "IfcDoorLiningProperties", "IfcDoorPanelOperationEnum", "IfcDoorPanelPositionEnum", "IfcDoorPanelProperties", "IfcDoorStyle", "IfcDoorStyleConstructionEnum", "IfcDoorStyleOperationEnum", "IfcDoseEquivalentMeasure", "IfcDraughtingCallout", "IfcDraughtingCalloutElement", "IfcDraughtingCalloutRelationship", "IfcDraughtingPreDefinedColour", "IfcDraughtingPreDefinedCurveFont", "IfcDraughtingPreDefinedTextFont", "IfcDuctFittingType", "IfcDuctFittingTypeEnum", "IfcDuctSegmentType", "IfcDuctSegmentTypeEnum", "IfcDuctSilencerType", "IfcDuctSilencerTypeEnum", "IfcDynamicViscosityMeasure", "IfcEdge", "IfcEdgeCurve", "IfcEdgeFeature", "IfcEdgeLoop", "IfcElectricApplianceType", "IfcElectricApplianceTypeEnum", "IfcElectricCapacitanceMeasure", "IfcElectricChargeMeasure", "IfcElectricConductanceMeasure", "IfcElectricCurrentEnum", "IfcElectricCurrentMeasure", "IfcElectricDistributionPoint", "IfcElectricDistributionPointFunctionEnum", "IfcElectricFlowStorageDeviceType", "IfcElectricFlowStorageDeviceTypeEnum", "IfcElectricGeneratorType", "IfcElectricGeneratorTypeEnum", "IfcElectricHeaterType", "IfcElectricHeaterTypeEnum", "IfcElectricMotorType", "IfcElectricMotorTypeEnum", "IfcElectricResistanceMeasure", "IfcElectricTimeControlType", "IfcElectricTimeControlTypeEnum", "IfcElectricVoltageMeasure", "IfcElectricalBaseProperties", "IfcElectricalCircuit", "IfcElectricalElement", "IfcElement", "IfcElementAssembly", "IfcElementAssemblyTypeEnum", "IfcElementComponent", "IfcElementComponentType", "IfcElementCompositionEnum", "IfcElementQuantity", "IfcElementType", "IfcElementarySurface", "IfcEllipse", "IfcEllipseProfileDef", "IfcEnergyConversionDevice", "IfcEnergyConversionDeviceType", "IfcEnergyMeasure", "IfcEnergyProperties", "IfcEnergySequenceEnum", "IfcEnvironmentalImpactCategoryEnum", "IfcEnvironmentalImpactValue", "IfcEquipmentElement", "IfcEquipmentStandard", "IfcEvaporativeCoolerType", "IfcEvaporativeCoolerTypeEnum", "IfcEvaporatorType", "IfcEvaporatorTypeEnum", "IfcExtendedMaterialProperties", "IfcExternalReference", "IfcExternallyDefinedHatchStyle", "IfcExternallyDefinedSurfaceStyle", "IfcExternallyDefinedSymbol", "IfcExternallyDefinedTextFont", "IfcExtrudedAreaSolid", "IfcFace", "IfcFaceBasedSurfaceModel", "IfcFaceBound", "IfcFaceOuterBound", "IfcFaceSurface", "IfcFacetedBrep", "IfcFacetedBrepWithVoids", "IfcFailureConnectionCondition", "IfcFanType", "IfcFanTypeEnum", "IfcFastener", "IfcFastenerType", "IfcFeatureElement", "IfcFeatureElementAddition", "IfcFeatureElementSubtraction", "IfcFillAreaStyle", "IfcFillAreaStyleHatching", "IfcFillAreaStyleTileShapeSelect", "IfcFillAreaStyleTileSymbolWithStyle", "IfcFillAreaStyleTiles", "IfcFillStyleSelect", "IfcFilterType", "IfcFilterTypeEnum", "IfcFireSuppressionTerminalType", "IfcFireSuppressionTerminalTypeEnum", "IfcFlowController", "IfcFlowControllerType", "IfcFlowDirectionEnum", "IfcFlowFitting", "IfcFlowFittingType", "IfcFlowInstrumentType", "IfcFlowInstrumentTypeEnum", "IfcFlowMeterType", "IfcFlowMeterTypeEnum", "IfcFlowMovingDevice", "IfcFlowMovingDeviceType", "IfcFlowSegment", "IfcFlowSegmentType", "IfcFlowStorageDevice", "IfcFlowStorageDeviceType", "IfcFlowTerminal", "IfcFlowTerminalType", "IfcFlowTreatmentDevice", "IfcFlowTreatmentDeviceType", "IfcFluidFlowProperties", "IfcFontStyle", "IfcFontVariant", "IfcFontWeight", "IfcFooting", "IfcFootingTypeEnum", "IfcForceMeasure", "IfcFrequencyMeasure", "IfcFuelProperties", "IfcFurnishingElement", "IfcFurnishingElementType", "IfcFurnitureStandard", "IfcFurnitureType", "IfcGasTerminalType", "IfcGasTerminalTypeEnum", "IfcGeneralMaterialProperties", "IfcGeneralProfileProperties", "IfcGeometricCurveSet", "IfcGeometricProjectionEnum", "IfcGeometricRepresentationContext", "IfcGeometricRepresentationItem", "IfcGeometricRepresentationSubContext", "IfcGeometricSet", "IfcGeometricSetSelect", "IfcGlobalOrLocalEnum", "IfcGloballyUniqueId", "IfcGrid", "IfcGridAxis", "IfcGridPlacement", "IfcGroup", "IfcHalfSpaceSolid", "IfcHatchLineDistanceSelect", "IfcHeatExchangerType", "IfcHeatExchangerTypeEnum", "IfcHeatFluxDensityMeasure", "IfcHeatingValueMeasure", "IfcHourInDay", "IfcHumidifierType", "IfcHumidifierTypeEnum", "IfcHygroscopicMaterialProperties", "IfcIShapeProfileDef", "IfcIdentifier", "IfcIlluminanceMeasure", "IfcImageTexture", "IfcInductanceMeasure", "IfcInteger", "IfcIntegerCountRateMeasure", "IfcInternalOrExternalEnum", "IfcInventory", "IfcInventoryTypeEnum", "IfcIonConcentrationMeasure", "IfcIrregularTimeSeries", "IfcIrregularTimeSeriesValue", "IfcIsothermalMoistureCapacityMeasure", "IfcJunctionBoxType", "IfcJunctionBoxTypeEnum", "IfcKinematicViscosityMeasure", "IfcLShapeProfileDef", "IfcLabel", "IfcLaborResource", "IfcLampType", "IfcLampTypeEnum", "IfcLayerSetDirectionEnum", "IfcLayeredItem", "IfcLengthMeasure", "IfcLibraryInformation", "IfcLibraryReference", "IfcLibrarySelect", "IfcLightDistributionCurveEnum", "IfcLightDistributionData", "IfcLightDistributionDataSourceSelect", "IfcLightEmissionSourceEnum", "IfcLightFixtureType", "IfcLightFixtureTypeEnum", "IfcLightIntensityDistribution", "IfcLightSource", "IfcLightSourceAmbient", "IfcLightSourceDirectional", "IfcLightSourceGoniometric", "IfcLightSourcePositional", "IfcLightSourceSpot", "IfcLine", "IfcLinearDimension", "IfcLinearForceMeasure", "IfcLinearMomentMeasure", "IfcLinearStiffnessMeasure", "IfcLinearVelocityMeasure", "IfcLoadGroupTypeEnum", "IfcLocalPlacement", "IfcLocalTime", "IfcLogical", "IfcLogicalOperatorEnum", "IfcLoop", "IfcLuminousFluxMeasure", "IfcLuminousIntensityDistributionMeasure", "IfcLuminousIntensityMeasure", "IfcMagneticFluxDensityMeasure", "IfcMagneticFluxMeasure", "IfcManifoldSolidBrep", "IfcMappedItem", "IfcMassDensityMeasure", "IfcMassFlowRateMeasure", "IfcMassMeasure", "IfcMassPerLengthMeasure", "IfcMaterial", "IfcMaterialClassificationRelationship", "IfcMaterialDefinitionRepresentation", "IfcMaterialLayer", "IfcMaterialLayerSet", "IfcMaterialLayerSetUsage", "IfcMaterialList", "IfcMaterialProperties", "IfcMaterialSelect", "IfcMeasureValue", "IfcMeasureWithUnit", "IfcMechanicalConcreteMaterialProperties", "IfcMechanicalFastener", "IfcMechanicalFastenerType", "IfcMechanicalMaterialProperties", "IfcMechanicalSteelMaterialProperties", "IfcMember", "IfcMemberType", "IfcMemberTypeEnum", "IfcMetric", "IfcMetricValueSelect", "IfcMinuteInHour", "IfcModulusOfElasticityMeasure", "IfcModulusOfLinearSubgradeReactionMeasure", "IfcModulusOfRotationalSubgradeReactionMeasure", "IfcModulusOfSubgradeReactionMeasure", "IfcMoistureDiffusivityMeasure", "IfcMolecularWeightMeasure", "IfcMomentOfInertiaMeasure", "IfcMonetaryMeasure", "IfcMonetaryUnit", "IfcMonthInYearNumber", "IfcMotorConnectionType", "IfcMotorConnectionTypeEnum", "IfcMove", "IfcNamedUnit", "IfcNormalisedRatioMeasure", "IfcNullStyle", "IfcNumericMeasure", "IfcObject", "IfcObjectDefinition", "IfcObjectPlacement", "IfcObjectReferenceSelect", "IfcObjectTypeEnum", "IfcObjective", "IfcObjectiveEnum", "IfcOccupant", "IfcOccupantTypeEnum", "IfcOffsetCurve2D", "IfcOffsetCurve3D", "IfcOneDirectionRepeatFactor", "IfcOpenShell", "IfcOpeningElement", "IfcOpticalMaterialProperties", "IfcOrderAction", "IfcOrganization", "IfcOrganizationRelationship", "IfcOrientationSelect", "IfcOrientedEdge", "IfcOutletType", "IfcOutletTypeEnum", "IfcOwnerHistory", "IfcPHMeasure", "IfcParameterValue", "IfcParameterizedProfileDef", "IfcPath", "IfcPerformanceHistory", "IfcPermeableCoveringOperationEnum", "IfcPermeableCoveringProperties", "IfcPermit", "IfcPerson", "IfcPersonAndOrganization", "IfcPhysicalComplexQuantity", "IfcPhysicalOrVirtualEnum", "IfcPhysicalQuantity", "IfcPhysicalSimpleQuantity", "IfcPile", "IfcPileConstructionEnum", "IfcPileTypeEnum", "IfcPipeFittingType", "IfcPipeFittingTypeEnum", "IfcPipeSegmentType", "IfcPipeSegmentTypeEnum", "IfcPixelTexture", "IfcPlacement", "IfcPlanarBox", "IfcPlanarExtent", "IfcPlanarForceMeasure", "IfcPlane", "IfcPlaneAngleMeasure", "IfcPlate", "IfcPlateType", "IfcPlateTypeEnum", "IfcPoint", "IfcPointOnCurve", "IfcPointOnSurface", "IfcPointOrVertexPoint", "IfcPolyLoop", "IfcPolygonalBoundedHalfSpace", "IfcPolyline", "IfcPort", "IfcPositiveLengthMeasure", "IfcPositivePlaneAngleMeasure", "IfcPositiveRatioMeasure", "IfcPostalAddress", "IfcPowerMeasure", "IfcPreDefinedColour", "IfcPreDefinedCurveFont", "IfcPreDefinedDimensionSymbol", "IfcPreDefinedItem", "IfcPreDefinedPointMarkerSymbol", "IfcPreDefinedSymbol", "IfcPreDefinedTerminatorSymbol", "IfcPreDefinedTextFont", "IfcPresentableText", "IfcPresentationLayerAssignment", "IfcPresentationLayerWithStyle", "IfcPresentationStyle", "IfcPresentationStyleAssignment", "IfcPresentationStyleSelect", "IfcPressureMeasure", "IfcProcedure", "IfcProcedureTypeEnum", "IfcProcess", "IfcProduct", "IfcProductDefinitionShape", "IfcProductRepresentation", "IfcProductsOfCombustionProperties", "IfcProfileDef", "IfcProfileProperties", "IfcProfileTypeEnum", "IfcProject", "IfcProjectOrder", "IfcProjectOrderRecord", "IfcProjectOrderRecordTypeEnum", "IfcProjectOrderTypeEnum", "IfcProjectedOrTrueLengthEnum", "IfcProjectionCurve", "IfcProjectionElement", "IfcProperty", "IfcPropertyBoundedValue", "IfcPropertyConstraintRelationship", "IfcPropertyDefinition", "IfcPropertyDependencyRelationship", "IfcPropertyEnumeratedValue", "IfcPropertyEnumeration", "IfcPropertyListValue", "IfcPropertyReferenceValue", "IfcPropertySet", "IfcPropertySetDefinition", "IfcPropertySingleValue", "IfcPropertySourceEnum", "IfcPropertyTableValue", "IfcProtectiveDeviceType", "IfcProtectiveDeviceTypeEnum", "IfcProxy", "IfcPumpType", "IfcPumpTypeEnum", "IfcQuantityArea", "IfcQuantityCount", "IfcQuantityLength", "IfcQuantityTime", "IfcQuantityVolume", "IfcQuantityWeight", "IfcRadioActivityMeasure", "IfcRadiusDimension", "IfcRailing", "IfcRailingType", "IfcRailingTypeEnum", "IfcRamp", "IfcRampFlight", "IfcRampFlightType", "IfcRampFlightTypeEnum", "IfcRampTypeEnum", "IfcRatioMeasure", "IfcRationalBezierCurve", "IfcReal", "IfcRectangleHollowProfileDef", "IfcRectangleProfileDef", "IfcRectangularPyramid", "IfcRectangularTrimmedSurface", "IfcReferencesValueDocument", "IfcReflectanceMethodEnum", "IfcRegularTimeSeries", "IfcReinforcementBarProperties", "IfcReinforcementDefinitionProperties", "IfcReinforcingBar", "IfcReinforcingBarRoleEnum", "IfcReinforcingBarSurfaceEnum", "IfcReinforcingElement", "IfcReinforcingMesh", "IfcRelAggregates", "IfcRelAssigns", "IfcRelAssignsTasks", "IfcRelAssignsToActor", "IfcRelAssignsToControl", "IfcRelAssignsToGroup", "IfcRelAssignsToProcess", "IfcRelAssignsToProduct", "IfcRelAssignsToProjectOrder", "IfcRelAssignsToResource", "IfcRelAssociates", "IfcRelAssociatesAppliedValue", "IfcRelAssociatesApproval", "IfcRelAssociatesClassification", "IfcRelAssociatesConstraint", "IfcRelAssociatesDocument", "IfcRelAssociatesLibrary", "IfcRelAssociatesMaterial", "IfcRelAssociatesProfileProperties", "IfcRelConnects", "IfcRelConnectsElements", "IfcRelConnectsPathElements", "IfcRelConnectsPortToElement", "IfcRelConnectsPorts", "IfcRelConnectsStructuralActivity", "IfcRelConnectsStructuralElement", "IfcRelConnectsStructuralMember", "IfcRelConnectsWithEccentricity", "IfcRelConnectsWithRealizingElements", "IfcRelContainedInSpatialStructure", "IfcRelCoversBldgElements", "IfcRelCoversSpaces", "IfcRelDecomposes", "IfcRelDefines", "IfcRelDefinesByProperties", "IfcRelDefinesByType", "IfcRelFillsElement", "IfcRelFlowControlElements", "IfcRelInteractionRequirements", "IfcRelNests", "IfcRelOccupiesSpaces", "IfcRelOverridesProperties", "IfcRelProjectsElement", "IfcRelReferencedInSpatialStructure", "IfcRelSchedulesCostItems", "IfcRelSequence", "IfcRelServicesBuildings", "IfcRelSpaceBoundary", "IfcRelVoidsElement", "IfcRelationship", "IfcRelaxation", "IfcRepresentation", "IfcRepresentationContext", "IfcRepresentationItem", "IfcRepresentationMap", "IfcResource", "IfcResourceConsumptionEnum", "IfcRevolvedAreaSolid", "IfcRibPlateDirectionEnum", "IfcRibPlateProfileProperties", "IfcRightCircularCone", "IfcRightCircularCylinder", "IfcRoleEnum", "IfcRoof", "IfcRoofTypeEnum", "IfcRoot", "IfcRotationalFrequencyMeasure", "IfcRotationalMassMeasure", "IfcRotationalStiffnessMeasure", "IfcRoundedEdgeFeature", "IfcRoundedRectangleProfileDef", "IfcSIPrefix", "IfcSIUnit", "IfcSIUnitName", "IfcSanitaryTerminalType", "IfcSanitaryTerminalTypeEnum", "IfcScheduleTimeControl", "IfcSecondInMinute", "IfcSectionModulusMeasure", "IfcSectionProperties", "IfcSectionReinforcementProperties", "IfcSectionTypeEnum", "IfcSectionalAreaIntegralMeasure", "IfcSectionedSpine", "IfcSensorType", "IfcSensorTypeEnum", "IfcSequenceEnum", "IfcServiceLife", "IfcServiceLifeFactor", "IfcServiceLifeFactorTypeEnum", "IfcServiceLifeTypeEnum", "IfcShapeAspect", "IfcShapeModel", "IfcShapeRepresentation", "IfcShearModulusMeasure", "IfcShell", "IfcShellBasedSurfaceModel", "IfcSimpleProperty", "IfcSimpleValue", "IfcSite", "IfcSizeSelect", "IfcSlab", "IfcSlabType", "IfcSlabTypeEnum", "IfcSlippageConnectionCondition", "IfcSolidAngleMeasure", "IfcSolidModel", "IfcSoundPowerMeasure", "IfcSoundPressureMeasure", "IfcSoundProperties", "IfcSoundScaleEnum", "IfcSoundValue", "IfcSpace", "IfcSpaceHeaterType", "IfcSpaceHeaterTypeEnum", "IfcSpaceProgram", "IfcSpaceThermalLoadProperties", "IfcSpaceType", "IfcSpaceTypeEnum", "IfcSpatialStructureElement", "IfcSpatialStructureElementType", "IfcSpecificHeatCapacityMeasure", "IfcSpecularExponent", "IfcSpecularHighlightSelect", "IfcSpecularRoughness", "IfcSphere", "IfcStackTerminalType", "IfcStackTerminalTypeEnum", "IfcStair", "IfcStairFlight", "IfcStairFlightType", "IfcStairFlightTypeEnum", "IfcStairTypeEnum", "IfcStateEnum", "IfcStructuralAction", "IfcStructuralActivity", "IfcStructuralActivityAssignmentSelect", "IfcStructuralAnalysisModel", "IfcStructuralConnection", "IfcStructuralConnectionCondition", "IfcStructuralCurveConnection", "IfcStructuralCurveMember", "IfcStructuralCurveMemberVarying", "IfcStructuralCurveTypeEnum", "IfcStructuralItem", "IfcStructuralLinearAction", "IfcStructuralLinearActionVarying", "IfcStructuralLoad", "IfcStructuralLoadGroup", "IfcStructuralLoadLinearForce", "IfcStructuralLoadPlanarForce", "IfcStructuralLoadSingleDisplacement", "IfcStructuralLoadSingleDisplacementDistortion", "IfcStructuralLoadSingleForce", "IfcStructuralLoadSingleForceWarping", "IfcStructuralLoadStatic", "IfcStructuralLoadTemperature", "IfcStructuralMember", "IfcStructuralPlanarAction", "IfcStructuralPlanarActionVarying", "IfcStructuralPointAction", "IfcStructuralPointConnection", "IfcStructuralPointReaction", "IfcStructuralProfileProperties", "IfcStructuralReaction", "IfcStructuralResultGroup", "IfcStructuralSteelProfileProperties", "IfcStructuralSurfaceConnection", "IfcStructuralSurfaceMember", "IfcStructuralSurfaceMemberVarying", "IfcStructuralSurfaceTypeEnum", "IfcStructuredDimensionCallout", "IfcStyleModel", "IfcStyledItem", "IfcStyledRepresentation", "IfcSubContractResource", "IfcSubedge", "IfcSurface", "IfcSurfaceCurveSweptAreaSolid", "IfcSurfaceOfLinearExtrusion", "IfcSurfaceOfRevolution", "IfcSurfaceOrFaceSurface", "IfcSurfaceSide", "IfcSurfaceStyle", "IfcSurfaceStyleElementSelect", "IfcSurfaceStyleLighting", "IfcSurfaceStyleRefraction", "IfcSurfaceStyleRendering", "IfcSurfaceStyleShading", "IfcSurfaceStyleWithTextures", "IfcSurfaceTexture", "IfcSurfaceTextureEnum", "IfcSweptAreaSolid", "IfcSweptDiskSolid", "IfcSweptSurface", "IfcSwitchingDeviceType", "IfcSwitchingDeviceTypeEnum", "IfcSymbolStyle", "IfcSymbolStyleSelect", "IfcSystem", "IfcSystemFurnitureElementType", "IfcTShapeProfileDef", "IfcTable", "IfcTableRow", "IfcTankType", "IfcTankTypeEnum", "IfcTask", "IfcTelecomAddress", "IfcTemperatureGradientMeasure", "IfcTendon", "IfcTendonAnchor", "IfcTendonTypeEnum", "IfcTerminatorSymbol", "IfcText", "IfcTextAlignment", "IfcTextDecoration", "IfcTextFontName", "IfcTextFontSelect", "IfcTextLiteral", "IfcTextLiteralWithExtent", "IfcTextPath", "IfcTextStyle", "IfcTextStyleFontModel", "IfcTextStyleForDefinedFont", "IfcTextStyleSelect", "IfcTextStyleTextModel", "IfcTextStyleWithBoxCharacteristics", "IfcTextTransformation", "IfcTextureCoordinate", "IfcTextureCoordinateGenerator", "IfcTextureMap", "IfcTextureVertex", "IfcThermalAdmittanceMeasure", "IfcThermalConductivityMeasure", "IfcThermalExpansionCoefficientMeasure", "IfcThermalLoadSourceEnum", "IfcThermalLoadTypeEnum", "IfcThermalMaterialProperties", "IfcThermalResistanceMeasure", "IfcThermalTransmittanceMeasure", "IfcThermodynamicTemperatureMeasure", "IfcTimeMeasure", "IfcTimeSeries", "IfcTimeSeriesDataTypeEnum", "IfcTimeSeriesReferenceRelationship", "IfcTimeSeriesSchedule", "IfcTimeSeriesScheduleTypeEnum", "IfcTimeSeriesValue", "IfcTimeStamp", "IfcTopologicalRepresentationItem", "IfcTopologyRepresentation", "IfcTorqueMeasure", "IfcTransformerType", "IfcTransformerTypeEnum", "IfcTransitionCode", "IfcTransportElement", "IfcTransportElementType", "IfcTransportElementTypeEnum", "IfcTrapeziumProfileDef", "IfcTrimmedCurve", "IfcTrimmingPreference", "IfcTrimmingSelect", "IfcTubeBundleType", "IfcTubeBundleTypeEnum", "IfcTwoDirectionRepeatFactor", "IfcTypeObject", "IfcTypeProduct", "IfcUShapeProfileDef", "IfcUnit", "IfcUnitAssignment", "IfcUnitEnum", "IfcUnitaryEquipmentType", "IfcUnitaryEquipmentTypeEnum", "IfcValue", "IfcValveType", "IfcValveTypeEnum", "IfcVaporPermeabilityMeasure", "IfcVector", "IfcVectorOrDirection", "IfcVertex", "IfcVertexBasedTextureMap", "IfcVertexLoop", "IfcVertexPoint", "IfcVibrationIsolatorType", "IfcVibrationIsolatorTypeEnum", "IfcVirtualElement", "IfcVirtualGridIntersection", "IfcVolumeMeasure", "IfcVolumetricFlowRateMeasure", "IfcWall", "IfcWallStandardCase", "IfcWallType", "IfcWallTypeEnum", "IfcWarpingConstantMeasure", "IfcWarpingMomentMeasure", "IfcWasteTerminalType", "IfcWasteTerminalTypeEnum", "IfcWaterProperties", "IfcWindow", "IfcWindowLiningProperties", "IfcWindowPanelOperationEnum", "IfcWindowPanelPositionEnum", "IfcWindowPanelProperties", "IfcWindowStyle", "IfcWindowStyleConstructionEnum", "IfcWindowStyleOperationEnum", "IfcWorkControl", "IfcWorkControlTypeEnum", "IfcWorkPlan", "IfcWorkSchedule", "IfcYearNumber", "IfcZShapeProfileDef", "IfcZone" };
     return names[v];
 }
 
diff --git a/src/ifcparse/Ifc2x3enum.h b/src/ifcparse/Ifc2x3enum.h
index 8d00eba882..462c7d8a34 100644
--- a/src/ifcparse/Ifc2x3enum.h
+++ b/src/ifcparse/Ifc2x3enum.h
@@ -42,7 +42,7 @@ namespace Type {
     } Enum;
     IFC_PARSE_API boost::optional<Enum> Parent(Enum v);
     IFC_PARSE_API Enum FromString(const std::string& s);
-    IFC_PARSE_API std::string ToString(Enum v);
+    IFC_PARSE_API const std::string& ToString(Enum v);
     IFC_PARSE_API bool IsSimple(Enum v);
 }
 
diff --git a/src/ifcparse/Ifc4.cpp b/src/ifcparse/Ifc4.cpp
index c2919cb93d..e5ee45e9b5 100644
--- a/src/ifcparse/Ifc4.cpp
+++ b/src/ifcparse/Ifc4.cpp
@@ -941,9 +941,9 @@ IfcUtil::IfcBaseClass* Ifc4::SchemaEntity(IfcEntityInstanceData* e) {
     }
 }
 
-std::string Type::ToString(Enum v) {
+const std::string& Type::ToString(Enum v) {
     if (v < 0 || v >= 1165) throw IfcException("Unable to find find keyword in schema");
-    const char* names[] = { "IfcAbsorbedDoseMeasure", "IfcAccelerationMeasure", "IfcActionRequest", "IfcActionRequestTypeEnum", "IfcActionSourceTypeEnum", "IfcActionTypeEnum", "IfcActor", "IfcActorRole", "IfcActorSelect", "IfcActuator", "IfcActuatorType", "IfcActuatorTypeEnum", "IfcAddress", "IfcAddressTypeEnum", "IfcAdvancedBrep", "IfcAdvancedBrepWithVoids", "IfcAdvancedFace", "IfcAirTerminal", "IfcAirTerminalBox", "IfcAirTerminalBoxType", "IfcAirTerminalBoxTypeEnum", "IfcAirTerminalType", "IfcAirTerminalTypeEnum", "IfcAirToAirHeatRecovery", "IfcAirToAirHeatRecoveryType", "IfcAirToAirHeatRecoveryTypeEnum", "IfcAlarm", "IfcAlarmType", "IfcAlarmTypeEnum", "IfcAmountOfSubstanceMeasure", "IfcAnalysisModelTypeEnum", "IfcAnalysisTheoryTypeEnum", "IfcAngularVelocityMeasure", "IfcAnnotation", "IfcAnnotationFillArea", "IfcApplication", "IfcAppliedValue", "IfcAppliedValueSelect", "IfcApproval", "IfcApprovalRelationship", "IfcArbitraryClosedProfileDef", "IfcArbitraryOpenProfileDef", "IfcArbitraryProfileDefWithVoids", "IfcArcIndex", "IfcAreaDensityMeasure", "IfcAreaMeasure", "IfcArithmeticOperatorEnum", "IfcAssemblyPlaceEnum", "IfcAsset", "IfcAsymmetricIShapeProfileDef", "IfcAudioVisualAppliance", "IfcAudioVisualApplianceType", "IfcAudioVisualApplianceTypeEnum", "IfcAxis1Placement", "IfcAxis2Placement", "IfcAxis2Placement2D", "IfcAxis2Placement3D", "IfcBSplineCurve", "IfcBSplineCurveForm", "IfcBSplineCurveWithKnots", "IfcBSplineSurface", "IfcBSplineSurfaceForm", "IfcBSplineSurfaceWithKnots", "IfcBeam", "IfcBeamStandardCase", "IfcBeamType", "IfcBeamTypeEnum", "IfcBenchmarkEnum", "IfcBendingParameterSelect", "IfcBinary", "IfcBlobTexture", "IfcBlock", "IfcBoiler", "IfcBoilerType", "IfcBoilerTypeEnum", "IfcBoolean", "IfcBooleanClippingResult", "IfcBooleanOperand", "IfcBooleanOperator", "IfcBooleanResult", "IfcBoundaryCondition", "IfcBoundaryCurve", "IfcBoundaryEdgeCondition", "IfcBoundaryFaceCondition", "IfcBoundaryNodeCondition", "IfcBoundaryNodeConditionWarping", "IfcBoundedCurve", "IfcBoundedSurface", "IfcBoundingBox", "IfcBoxAlignment", "IfcBoxedHalfSpace", "IfcBuilding", "IfcBuildingElement", "IfcBuildingElementPart", "IfcBuildingElementPartType", "IfcBuildingElementPartTypeEnum", "IfcBuildingElementProxy", "IfcBuildingElementProxyType", "IfcBuildingElementProxyTypeEnum", "IfcBuildingElementType", "IfcBuildingStorey", "IfcBuildingSystem", "IfcBuildingSystemTypeEnum", "IfcBurner", "IfcBurnerType", "IfcBurnerTypeEnum", "IfcCShapeProfileDef", "IfcCableCarrierFitting", "IfcCableCarrierFittingType", "IfcCableCarrierFittingTypeEnum", "IfcCableCarrierSegment", "IfcCableCarrierSegmentType", "IfcCableCarrierSegmentTypeEnum", "IfcCableFitting", "IfcCableFittingType", "IfcCableFittingTypeEnum", "IfcCableSegment", "IfcCableSegmentType", "IfcCableSegmentTypeEnum", "IfcCardinalPointReference", "IfcCartesianPoint", "IfcCartesianPointList", "IfcCartesianPointList2D", "IfcCartesianPointList3D", "IfcCartesianTransformationOperator", "IfcCartesianTransformationOperator2D", "IfcCartesianTransformationOperator2DnonUniform", "IfcCartesianTransformationOperator3D", "IfcCartesianTransformationOperator3DnonUniform", "IfcCenterLineProfileDef", "IfcChangeActionEnum", "IfcChiller", "IfcChillerType", "IfcChillerTypeEnum", "IfcChimney", "IfcChimneyType", "IfcChimneyTypeEnum", "IfcCircle", "IfcCircleHollowProfileDef", "IfcCircleProfileDef", "IfcCivilElement", "IfcCivilElementType", "IfcClassification", "IfcClassificationReference", "IfcClassificationReferenceSelect", "IfcClassificationSelect", "IfcClosedShell", "IfcCoil", "IfcCoilType", "IfcCoilTypeEnum", "IfcColour", "IfcColourOrFactor", "IfcColourRgb", "IfcColourRgbList", "IfcColourSpecification", "IfcColumn", "IfcColumnStandardCase", "IfcColumnType", "IfcColumnTypeEnum", "IfcCommunicationsAppliance", "IfcCommunicationsApplianceType", "IfcCommunicationsApplianceTypeEnum", "IfcComplexNumber", "IfcComplexProperty", "IfcComplexPropertyTemplate", "IfcComplexPropertyTemplateTypeEnum", "IfcCompositeCurve", "IfcCompositeCurveOnSurface", "IfcCompositeCurveSegment", "IfcCompositeProfileDef", "IfcCompoundPlaneAngleMeasure", "IfcCompressor", "IfcCompressorType", "IfcCompressorTypeEnum", "IfcCondenser", "IfcCondenserType", "IfcCondenserTypeEnum", "IfcConic", "IfcConnectedFaceSet", "IfcConnectionCurveGeometry", "IfcConnectionGeometry", "IfcConnectionPointEccentricity", "IfcConnectionPointGeometry", "IfcConnectionSurfaceGeometry", "IfcConnectionTypeEnum", "IfcConnectionVolumeGeometry", "IfcConstraint", "IfcConstraintEnum", "IfcConstructionEquipmentResource", "IfcConstructionEquipmentResourceType", "IfcConstructionEquipmentResourceTypeEnum", "IfcConstructionMaterialResource", "IfcConstructionMaterialResourceType", "IfcConstructionMaterialResourceTypeEnum", "IfcConstructionProductResource", "IfcConstructionProductResourceType", "IfcConstructionProductResourceTypeEnum", "IfcConstructionResource", "IfcConstructionResourceType", "IfcContext", "IfcContextDependentMeasure", "IfcContextDependentUnit", "IfcControl", "IfcController", "IfcControllerType", "IfcControllerTypeEnum", "IfcConversionBasedUnit", "IfcConversionBasedUnitWithOffset", "IfcCooledBeam", "IfcCooledBeamType", "IfcCooledBeamTypeEnum", "IfcCoolingTower", "IfcCoolingTowerType", "IfcCoolingTowerTypeEnum", "IfcCoordinateOperation", "IfcCoordinateReferenceSystem", "IfcCoordinateReferenceSystemSelect", "IfcCostItem", "IfcCostItemTypeEnum", "IfcCostSchedule", "IfcCostScheduleTypeEnum", "IfcCostValue", "IfcCountMeasure", "IfcCovering", "IfcCoveringType", "IfcCoveringTypeEnum", "IfcCrewResource", "IfcCrewResourceType", "IfcCrewResourceTypeEnum", "IfcCsgPrimitive3D", "IfcCsgSelect", "IfcCsgSolid", "IfcCurrencyRelationship", "IfcCurtainWall", "IfcCurtainWallType", "IfcCurtainWallTypeEnum", "IfcCurvatureMeasure", "IfcCurve", "IfcCurveBoundedPlane", "IfcCurveBoundedSurface", "IfcCurveFontOrScaledCurveFontSelect", "IfcCurveInterpolationEnum", "IfcCurveOnSurface", "IfcCurveOrEdgeCurve", "IfcCurveStyle", "IfcCurveStyleFont", "IfcCurveStyleFontAndScaling", "IfcCurveStyleFontPattern", "IfcCurveStyleFontSelect", "IfcCylindricalSurface", "IfcDamper", "IfcDamperType", "IfcDamperTypeEnum", "IfcDataOriginEnum", "IfcDate", "IfcDateTime", "IfcDayInMonthNumber", "IfcDayInWeekNumber", "IfcDefinitionSelect", "IfcDerivedMeasureValue", "IfcDerivedProfileDef", "IfcDerivedUnit", "IfcDerivedUnitElement", "IfcDerivedUnitEnum", "IfcDescriptiveMeasure", "IfcDimensionCount", "IfcDimensionalExponents", "IfcDirection", "IfcDirectionSenseEnum", "IfcDiscreteAccessory", "IfcDiscreteAccessoryType", "IfcDiscreteAccessoryTypeEnum", "IfcDistributionChamberElement", "IfcDistributionChamberElementType", "IfcDistributionChamberElementTypeEnum", "IfcDistributionCircuit", "IfcDistributionControlElement", "IfcDistributionControlElementType", "IfcDistributionElement", "IfcDistributionElementType", "IfcDistributionFlowElement", "IfcDistributionFlowElementType", "IfcDistributionPort", "IfcDistributionPortTypeEnum", "IfcDistributionSystem", "IfcDistributionSystemEnum", "IfcDocumentConfidentialityEnum", "IfcDocumentInformation", "IfcDocumentInformationRelationship", "IfcDocumentReference", "IfcDocumentSelect", "IfcDocumentStatusEnum", "IfcDoor", "IfcDoorLiningProperties", "IfcDoorPanelOperationEnum", "IfcDoorPanelPositionEnum", "IfcDoorPanelProperties", "IfcDoorStandardCase", "IfcDoorStyle", "IfcDoorStyleConstructionEnum", "IfcDoorStyleOperationEnum", "IfcDoorType", "IfcDoorTypeEnum", "IfcDoorTypeOperationEnum", "IfcDoseEquivalentMeasure", "IfcDraughtingPreDefinedColour", "IfcDraughtingPreDefinedCurveFont", "IfcDuctFitting", "IfcDuctFittingType", "IfcDuctFittingTypeEnum", "IfcDuctSegment", "IfcDuctSegmentType", "IfcDuctSegmentTypeEnum", "IfcDuctSilencer", "IfcDuctSilencerType", "IfcDuctSilencerTypeEnum", "IfcDuration", "IfcDynamicViscosityMeasure", "IfcEdge", "IfcEdgeCurve", "IfcEdgeLoop", "IfcElectricAppliance", "IfcElectricApplianceType", "IfcElectricApplianceTypeEnum", "IfcElectricCapacitanceMeasure", "IfcElectricChargeMeasure", "IfcElectricConductanceMeasure", "IfcElectricCurrentMeasure", "IfcElectricDistributionBoard", "IfcElectricDistributionBoardType", "IfcElectricDistributionBoardTypeEnum", "IfcElectricFlowStorageDevice", "IfcElectricFlowStorageDeviceType", "IfcElectricFlowStorageDeviceTypeEnum", "IfcElectricGenerator", "IfcElectricGeneratorType", "IfcElectricGeneratorTypeEnum", "IfcElectricMotor", "IfcElectricMotorType", "IfcElectricMotorTypeEnum", "IfcElectricResistanceMeasure", "IfcElectricTimeControl", "IfcElectricTimeControlType", "IfcElectricTimeControlTypeEnum", "IfcElectricVoltageMeasure", "IfcElement", "IfcElementAssembly", "IfcElementAssemblyType", "IfcElementAssemblyTypeEnum", "IfcElementComponent", "IfcElementComponentType", "IfcElementCompositionEnum", "IfcElementQuantity", "IfcElementType", "IfcElementarySurface", "IfcEllipse", "IfcEllipseProfileDef", "IfcEnergyConversionDevice", "IfcEnergyConversionDeviceType", "IfcEnergyMeasure", "IfcEngine", "IfcEngineType", "IfcEngineTypeEnum", "IfcEvaporativeCooler", "IfcEvaporativeCoolerType", "IfcEvaporativeCoolerTypeEnum", "IfcEvaporator", "IfcEvaporatorType", "IfcEvaporatorTypeEnum", "IfcEvent", "IfcEventTime", "IfcEventTriggerTypeEnum", "IfcEventType", "IfcEventTypeEnum", "IfcExtendedProperties", "IfcExternalInformation", "IfcExternalReference", "IfcExternalReferenceRelationship", "IfcExternalSpatialElement", "IfcExternalSpatialElementTypeEnum", "IfcExternalSpatialStructureElement", "IfcExternallyDefinedHatchStyle", "IfcExternallyDefinedSurfaceStyle", "IfcExternallyDefinedTextFont", "IfcExtrudedAreaSolid", "IfcExtrudedAreaSolidTapered", "IfcFace", "IfcFaceBasedSurfaceModel", "IfcFaceBound", "IfcFaceOuterBound", "IfcFaceSurface", "IfcFacetedBrep", "IfcFacetedBrepWithVoids", "IfcFailureConnectionCondition", "IfcFan", "IfcFanType", "IfcFanTypeEnum", "IfcFastener", "IfcFastenerType", "IfcFastenerTypeEnum", "IfcFeatureElement", "IfcFeatureElementAddition", "IfcFeatureElementSubtraction", "IfcFillAreaStyle", "IfcFillAreaStyleHatching", "IfcFillAreaStyleTiles", "IfcFillStyleSelect", "IfcFilter", "IfcFilterType", "IfcFilterTypeEnum", "IfcFireSuppressionTerminal", "IfcFireSuppressionTerminalType", "IfcFireSuppressionTerminalTypeEnum", "IfcFixedReferenceSweptAreaSolid", "IfcFlowController", "IfcFlowControllerType", "IfcFlowDirectionEnum", "IfcFlowFitting", "IfcFlowFittingType", "IfcFlowInstrument", "IfcFlowInstrumentType", "IfcFlowInstrumentTypeEnum", "IfcFlowMeter", "IfcFlowMeterType", "IfcFlowMeterTypeEnum", "IfcFlowMovingDevice", "IfcFlowMovingDeviceType", "IfcFlowSegment", "IfcFlowSegmentType", "IfcFlowStorageDevice", "IfcFlowStorageDeviceType", "IfcFlowTerminal", "IfcFlowTerminalType", "IfcFlowTreatmentDevice", "IfcFlowTreatmentDeviceType", "IfcFontStyle", "IfcFontVariant", "IfcFontWeight", "IfcFooting", "IfcFootingType", "IfcFootingTypeEnum", "IfcForceMeasure", "IfcFrequencyMeasure", "IfcFurnishingElement", "IfcFurnishingElementType", "IfcFurniture", "IfcFurnitureType", "IfcFurnitureTypeEnum", "IfcGeographicElement", "IfcGeographicElementType", "IfcGeographicElementTypeEnum", "IfcGeometricCurveSet", "IfcGeometricProjectionEnum", "IfcGeometricRepresentationContext", "IfcGeometricRepresentationItem", "IfcGeometricRepresentationSubContext", "IfcGeometricSet", "IfcGeometricSetSelect", "IfcGlobalOrLocalEnum", "IfcGloballyUniqueId", "IfcGrid", "IfcGridAxis", "IfcGridPlacement", "IfcGridPlacementDirectionSelect", "IfcGridTypeEnum", "IfcGroup", "IfcHalfSpaceSolid", "IfcHatchLineDistanceSelect", "IfcHeatExchanger", "IfcHeatExchangerType", "IfcHeatExchangerTypeEnum", "IfcHeatFluxDensityMeasure", "IfcHeatingValueMeasure", "IfcHumidifier", "IfcHumidifierType", "IfcHumidifierTypeEnum", "IfcIShapeProfileDef", "IfcIdentifier", "IfcIlluminanceMeasure", "IfcImageTexture", "IfcIndexedColourMap", "IfcIndexedPolyCurve", "IfcIndexedTextureMap", "IfcIndexedTriangleTextureMap", "IfcInductanceMeasure", "IfcInteger", "IfcIntegerCountRateMeasure", "IfcInterceptor", "IfcInterceptorType", "IfcInterceptorTypeEnum", "IfcInternalOrExternalEnum", "IfcInventory", "IfcInventoryTypeEnum", "IfcIonConcentrationMeasure", "IfcIrregularTimeSeries", "IfcIrregularTimeSeriesValue", "IfcIsothermalMoistureCapacityMeasure", "IfcJunctionBox", "IfcJunctionBoxType", "IfcJunctionBoxTypeEnum", "IfcKinematicViscosityMeasure", "IfcKnotType", "IfcLShapeProfileDef", "IfcLabel", "IfcLaborResource", "IfcLaborResourceType", "IfcLaborResourceTypeEnum", "IfcLagTime", "IfcLamp", "IfcLampType", "IfcLampTypeEnum", "IfcLanguageId", "IfcLayerSetDirectionEnum", "IfcLayeredItem", "IfcLengthMeasure", "IfcLibraryInformation", "IfcLibraryReference", "IfcLibrarySelect", "IfcLightDistributionCurveEnum", "IfcLightDistributionData", "IfcLightDistributionDataSourceSelect", "IfcLightEmissionSourceEnum", "IfcLightFixture", "IfcLightFixtureType", "IfcLightFixtureTypeEnum", "IfcLightIntensityDistribution", "IfcLightSource", "IfcLightSourceAmbient", "IfcLightSourceDirectional", "IfcLightSourceGoniometric", "IfcLightSourcePositional", "IfcLightSourceSpot", "IfcLine", "IfcLineIndex", "IfcLinearForceMeasure", "IfcLinearMomentMeasure", "IfcLinearStiffnessMeasure", "IfcLinearVelocityMeasure", "IfcLoadGroupTypeEnum", "IfcLocalPlacement", "IfcLogical", "IfcLogicalOperatorEnum", "IfcLoop", "IfcLuminousFluxMeasure", "IfcLuminousIntensityDistributionMeasure", "IfcLuminousIntensityMeasure", "IfcMagneticFluxDensityMeasure", "IfcMagneticFluxMeasure", "IfcManifoldSolidBrep", "IfcMapConversion", "IfcMappedItem", "IfcMassDensityMeasure", "IfcMassFlowRateMeasure", "IfcMassMeasure", "IfcMassPerLengthMeasure", "IfcMaterial", "IfcMaterialClassificationRelationship", "IfcMaterialConstituent", "IfcMaterialConstituentSet", "IfcMaterialDefinition", "IfcMaterialDefinitionRepresentation", "IfcMaterialLayer", "IfcMaterialLayerSet", "IfcMaterialLayerSetUsage", "IfcMaterialLayerWithOffsets", "IfcMaterialList", "IfcMaterialProfile", "IfcMaterialProfileSet", "IfcMaterialProfileSetUsage", "IfcMaterialProfileSetUsageTapering", "IfcMaterialProfileWithOffsets", "IfcMaterialProperties", "IfcMaterialRelationship", "IfcMaterialSelect", "IfcMaterialUsageDefinition", "IfcMeasureValue", "IfcMeasureWithUnit", "IfcMechanicalFastener", "IfcMechanicalFastenerType", "IfcMechanicalFastenerTypeEnum", "IfcMedicalDevice", "IfcMedicalDeviceType", "IfcMedicalDeviceTypeEnum", "IfcMember", "IfcMemberStandardCase", "IfcMemberType", "IfcMemberTypeEnum", "IfcMetric", "IfcMetricValueSelect", "IfcMirroredProfileDef", "IfcModulusOfElasticityMeasure", "IfcModulusOfLinearSubgradeReactionMeasure", "IfcModulusOfRotationalSubgradeReactionMeasure", "IfcModulusOfRotationalSubgradeReactionSelect", "IfcModulusOfSubgradeReactionMeasure", "IfcModulusOfSubgradeReactionSelect", "IfcModulusOfTranslationalSubgradeReactionSelect", "IfcMoistureDiffusivityMeasure", "IfcMolecularWeightMeasure", "IfcMomentOfInertiaMeasure", "IfcMonetaryMeasure", "IfcMonetaryUnit", "IfcMonthInYearNumber", "IfcMotorConnection", "IfcMotorConnectionType", "IfcMotorConnectionTypeEnum", "IfcNamedUnit", "IfcNonNegativeLengthMeasure", "IfcNormalisedRatioMeasure", "IfcNullStyle", "IfcNumericMeasure", "IfcObject", "IfcObjectDefinition", "IfcObjectPlacement", "IfcObjectReferenceSelect", "IfcObjectTypeEnum", "IfcObjective", "IfcObjectiveEnum", "IfcOccupant", "IfcOccupantTypeEnum", "IfcOffsetCurve2D", "IfcOffsetCurve3D", "IfcOpenShell", "IfcOpeningElement", "IfcOpeningElementTypeEnum", "IfcOpeningStandardCase", "IfcOrganization", "IfcOrganizationRelationship", "IfcOrientedEdge", "IfcOuterBoundaryCurve", "IfcOutlet", "IfcOutletType", "IfcOutletTypeEnum", "IfcOwnerHistory", "IfcPHMeasure", "IfcParameterValue", "IfcParameterizedProfileDef", "IfcPath", "IfcPcurve", "IfcPerformanceHistory", "IfcPerformanceHistoryTypeEnum", "IfcPermeableCoveringOperationEnum", "IfcPermeableCoveringProperties", "IfcPermit", "IfcPermitTypeEnum", "IfcPerson", "IfcPersonAndOrganization", "IfcPhysicalComplexQuantity", "IfcPhysicalOrVirtualEnum", "IfcPhysicalQuantity", "IfcPhysicalSimpleQuantity", "IfcPile", "IfcPileConstructionEnum", "IfcPileType", "IfcPileTypeEnum", "IfcPipeFitting", "IfcPipeFittingType", "IfcPipeFittingTypeEnum", "IfcPipeSegment", "IfcPipeSegmentType", "IfcPipeSegmentTypeEnum", "IfcPixelTexture", "IfcPlacement", "IfcPlanarBox", "IfcPlanarExtent", "IfcPlanarForceMeasure", "IfcPlane", "IfcPlaneAngleMeasure", "IfcPlate", "IfcPlateStandardCase", "IfcPlateType", "IfcPlateTypeEnum", "IfcPoint", "IfcPointOnCurve", "IfcPointOnSurface", "IfcPointOrVertexPoint", "IfcPolyLoop", "IfcPolygonalBoundedHalfSpace", "IfcPolyline", "IfcPort", "IfcPositiveInteger", "IfcPositiveLengthMeasure", "IfcPositivePlaneAngleMeasure", "IfcPositiveRatioMeasure", "IfcPostalAddress", "IfcPowerMeasure", "IfcPreDefinedColour", "IfcPreDefinedCurveFont", "IfcPreDefinedItem", "IfcPreDefinedProperties", "IfcPreDefinedPropertySet", "IfcPreDefinedTextFont", "IfcPresentableText", "IfcPresentationItem", "IfcPresentationLayerAssignment", "IfcPresentationLayerWithStyle", "IfcPresentationStyle", "IfcPresentationStyleAssignment", "IfcPresentationStyleSelect", "IfcPressureMeasure", "IfcProcedure", "IfcProcedureType", "IfcProcedureTypeEnum", "IfcProcess", "IfcProcessSelect", "IfcProduct", "IfcProductDefinitionShape", "IfcProductRepresentation", "IfcProductRepresentationSelect", "IfcProductSelect", "IfcProfileDef", "IfcProfileProperties", "IfcProfileTypeEnum", "IfcProject", "IfcProjectLibrary", "IfcProjectOrder", "IfcProjectOrderTypeEnum", "IfcProjectedCRS", "IfcProjectedOrTrueLengthEnum", "IfcProjectionElement", "IfcProjectionElementTypeEnum", "IfcProperty", "IfcPropertyAbstraction", "IfcPropertyBoundedValue", "IfcPropertyDefinition", "IfcPropertyDependencyRelationship", "IfcPropertyEnumeratedValue", "IfcPropertyEnumeration", "IfcPropertyListValue", "IfcPropertyReferenceValue", "IfcPropertySet", "IfcPropertySetDefinition", "IfcPropertySetDefinitionSelect", "IfcPropertySetDefinitionSet", "IfcPropertySetTemplate", "IfcPropertySetTemplateTypeEnum", "IfcPropertySingleValue", "IfcPropertyTableValue", "IfcPropertyTemplate", "IfcPropertyTemplateDefinition", "IfcProtectiveDevice", "IfcProtectiveDeviceTrippingUnit", "IfcProtectiveDeviceTrippingUnitType", "IfcProtectiveDeviceTrippingUnitTypeEnum", "IfcProtectiveDeviceType", "IfcProtectiveDeviceTypeEnum", "IfcProxy", "IfcPump", "IfcPumpType", "IfcPumpTypeEnum", "IfcQuantityArea", "IfcQuantityCount", "IfcQuantityLength", "IfcQuantitySet", "IfcQuantityTime", "IfcQuantityVolume", "IfcQuantityWeight", "IfcRadioActivityMeasure", "IfcRailing", "IfcRailingType", "IfcRailingTypeEnum", "IfcRamp", "IfcRampFlight", "IfcRampFlightType", "IfcRampFlightTypeEnum", "IfcRampType", "IfcRampTypeEnum", "IfcRatioMeasure", "IfcRationalBSplineCurveWithKnots", "IfcRationalBSplineSurfaceWithKnots", "IfcReal", "IfcRectangleHollowProfileDef", "IfcRectangleProfileDef", "IfcRectangularPyramid", "IfcRectangularTrimmedSurface", "IfcRecurrencePattern", "IfcRecurrenceTypeEnum", "IfcReference", "IfcReflectanceMethodEnum", "IfcRegularTimeSeries", "IfcReinforcementBarProperties", "IfcReinforcementDefinitionProperties", "IfcReinforcingBar", "IfcReinforcingBarRoleEnum", "IfcReinforcingBarSurfaceEnum", "IfcReinforcingBarType", "IfcReinforcingBarTypeEnum", "IfcReinforcingElement", "IfcReinforcingElementType", "IfcReinforcingMesh", "IfcReinforcingMeshType", "IfcReinforcingMeshTypeEnum", "IfcRelAggregates", "IfcRelAssigns", "IfcRelAssignsToActor", "IfcRelAssignsToControl", "IfcRelAssignsToGroup", "IfcRelAssignsToGroupByFactor", "IfcRelAssignsToProcess", "IfcRelAssignsToProduct", "IfcRelAssignsToResource", "IfcRelAssociates", "IfcRelAssociatesApproval", "IfcRelAssociatesClassification", "IfcRelAssociatesConstraint", "IfcRelAssociatesDocument", "IfcRelAssociatesLibrary", "IfcRelAssociatesMaterial", "IfcRelConnects", "IfcRelConnectsElements", "IfcRelConnectsPathElements", "IfcRelConnectsPortToElement", "IfcRelConnectsPorts", "IfcRelConnectsStructuralActivity", "IfcRelConnectsStructuralMember", "IfcRelConnectsWithEccentricity", "IfcRelConnectsWithRealizingElements", "IfcRelContainedInSpatialStructure", "IfcRelCoversBldgElements", "IfcRelCoversSpaces", "IfcRelDeclares", "IfcRelDecomposes", "IfcRelDefines", "IfcRelDefinesByObject", "IfcRelDefinesByProperties", "IfcRelDefinesByTemplate", "IfcRelDefinesByType", "IfcRelFillsElement", "IfcRelFlowControlElements", "IfcRelInterferesElements", "IfcRelNests", "IfcRelProjectsElement", "IfcRelReferencedInSpatialStructure", "IfcRelSequence", "IfcRelServicesBuildings", "IfcRelSpaceBoundary", "IfcRelSpaceBoundary1stLevel", "IfcRelSpaceBoundary2ndLevel", "IfcRelVoidsElement", "IfcRelationship", "IfcReparametrisedCompositeCurveSegment", "IfcRepresentation", "IfcRepresentationContext", "IfcRepresentationItem", "IfcRepresentationMap", "IfcResource", "IfcResourceApprovalRelationship", "IfcResourceConstraintRelationship", "IfcResourceLevelRelationship", "IfcResourceObjectSelect", "IfcResourceSelect", "IfcResourceTime", "IfcRevolvedAreaSolid", "IfcRevolvedAreaSolidTapered", "IfcRightCircularCone", "IfcRightCircularCylinder", "IfcRoleEnum", "IfcRoof", "IfcRoofType", "IfcRoofTypeEnum", "IfcRoot", "IfcRotationalFrequencyMeasure", "IfcRotationalMassMeasure", "IfcRotationalStiffnessMeasure", "IfcRotationalStiffnessSelect", "IfcRoundedRectangleProfileDef", "IfcSIPrefix", "IfcSIUnit", "IfcSIUnitName", "IfcSanitaryTerminal", "IfcSanitaryTerminalType", "IfcSanitaryTerminalTypeEnum", "IfcSchedulingTime", "IfcSectionModulusMeasure", "IfcSectionProperties", "IfcSectionReinforcementProperties", "IfcSectionTypeEnum", "IfcSectionalAreaIntegralMeasure", "IfcSectionedSpine", "IfcSegmentIndexSelect", "IfcSensor", "IfcSensorType", "IfcSensorTypeEnum", "IfcSequenceEnum", "IfcShadingDevice", "IfcShadingDeviceType", "IfcShadingDeviceTypeEnum", "IfcShapeAspect", "IfcShapeModel", "IfcShapeRepresentation", "IfcShearModulusMeasure", "IfcShell", "IfcShellBasedSurfaceModel", "IfcSimpleProperty", "IfcSimplePropertyTemplate", "IfcSimplePropertyTemplateTypeEnum", "IfcSimpleValue", "IfcSite", "IfcSizeSelect", "IfcSlab", "IfcSlabElementedCase", "IfcSlabStandardCase", "IfcSlabType", "IfcSlabTypeEnum", "IfcSlippageConnectionCondition", "IfcSolarDevice", "IfcSolarDeviceType", "IfcSolarDeviceTypeEnum", "IfcSolidAngleMeasure", "IfcSolidModel", "IfcSolidOrShell", "IfcSoundPowerLevelMeasure", "IfcSoundPowerMeasure", "IfcSoundPressureLevelMeasure", "IfcSoundPressureMeasure", "IfcSpace", "IfcSpaceBoundarySelect", "IfcSpaceHeater", "IfcSpaceHeaterType", "IfcSpaceHeaterTypeEnum", "IfcSpaceType", "IfcSpaceTypeEnum", "IfcSpatialElement", "IfcSpatialElementType", "IfcSpatialStructureElement", "IfcSpatialStructureElementType", "IfcSpatialZone", "IfcSpatialZoneType", "IfcSpatialZoneTypeEnum", "IfcSpecificHeatCapacityMeasure", "IfcSpecularExponent", "IfcSpecularHighlightSelect", "IfcSpecularRoughness", "IfcSphere", "IfcStackTerminal", "IfcStackTerminalType", "IfcStackTerminalTypeEnum", "IfcStair", "IfcStairFlight", "IfcStairFlightType", "IfcStairFlightTypeEnum", "IfcStairType", "IfcStairTypeEnum", "IfcStateEnum", "IfcStrippedOptional", "IfcStructuralAction", "IfcStructuralActivity", "IfcStructuralActivityAssignmentSelect", "IfcStructuralAnalysisModel", "IfcStructuralConnection", "IfcStructuralConnectionCondition", "IfcStructuralCurveAction", "IfcStructuralCurveActivityTypeEnum", "IfcStructuralCurveConnection", "IfcStructuralCurveMember", "IfcStructuralCurveMemberTypeEnum", "IfcStructuralCurveMemberVarying", "IfcStructuralCurveReaction", "IfcStructuralItem", "IfcStructuralLinearAction", "IfcStructuralLoad", "IfcStructuralLoadCase", "IfcStructuralLoadConfiguration", "IfcStructuralLoadGroup", "IfcStructuralLoadLinearForce", "IfcStructuralLoadOrResult", "IfcStructuralLoadPlanarForce", "IfcStructuralLoadSingleDisplacement", "IfcStructuralLoadSingleDisplacementDistortion", "IfcStructuralLoadSingleForce", "IfcStructuralLoadSingleForceWarping", "IfcStructuralLoadStatic", "IfcStructuralLoadTemperature", "IfcStructuralMember", "IfcStructuralPlanarAction", "IfcStructuralPointAction", "IfcStructuralPointConnection", "IfcStructuralPointReaction", "IfcStructuralReaction", "IfcStructuralResultGroup", "IfcStructuralSurfaceAction", "IfcStructuralSurfaceActivityTypeEnum", "IfcStructuralSurfaceConnection", "IfcStructuralSurfaceMember", "IfcStructuralSurfaceMemberTypeEnum", "IfcStructuralSurfaceMemberVarying", "IfcStructuralSurfaceReaction", "IfcStyleAssignmentSelect", "IfcStyleModel", "IfcStyledItem", "IfcStyledRepresentation", "IfcSubContractResource", "IfcSubContractResourceType", "IfcSubContractResourceTypeEnum", "IfcSubedge", "IfcSurface", "IfcSurfaceCurveSweptAreaSolid", "IfcSurfaceFeature", "IfcSurfaceFeatureTypeEnum", "IfcSurfaceOfLinearExtrusion", "IfcSurfaceOfRevolution", "IfcSurfaceOrFaceSurface", "IfcSurfaceReinforcementArea", "IfcSurfaceSide", "IfcSurfaceStyle", "IfcSurfaceStyleElementSelect", "IfcSurfaceStyleLighting", "IfcSurfaceStyleRefraction", "IfcSurfaceStyleRendering", "IfcSurfaceStyleShading", "IfcSurfaceStyleWithTextures", "IfcSurfaceTexture", "IfcSweptAreaSolid", "IfcSweptDiskSolid", "IfcSweptDiskSolidPolygonal", "IfcSweptSurface", "IfcSwitchingDevice", "IfcSwitchingDeviceType", "IfcSwitchingDeviceTypeEnum", "IfcSystem", "IfcSystemFurnitureElement", "IfcSystemFurnitureElementType", "IfcSystemFurnitureElementTypeEnum", "IfcTShapeProfileDef", "IfcTable", "IfcTableColumn", "IfcTableRow", "IfcTank", "IfcTankType", "IfcTankTypeEnum", "IfcTask", "IfcTaskDurationEnum", "IfcTaskTime", "IfcTaskTimeRecurring", "IfcTaskType", "IfcTaskTypeEnum", "IfcTelecomAddress", "IfcTemperatureGradientMeasure", "IfcTemperatureRateOfChangeMeasure", "IfcTendon", "IfcTendonAnchor", "IfcTendonAnchorType", "IfcTendonAnchorTypeEnum", "IfcTendonType", "IfcTendonTypeEnum", "IfcTessellatedFaceSet", "IfcTessellatedItem", "IfcText", "IfcTextAlignment", "IfcTextDecoration", "IfcTextFontName", "IfcTextFontSelect", "IfcTextLiteral", "IfcTextLiteralWithExtent", "IfcTextPath", "IfcTextStyle", "IfcTextStyleFontModel", "IfcTextStyleForDefinedFont", "IfcTextStyleTextModel", "IfcTextTransformation", "IfcTextureCoordinate", "IfcTextureCoordinateGenerator", "IfcTextureMap", "IfcTextureVertex", "IfcTextureVertexList", "IfcThermalAdmittanceMeasure", "IfcThermalConductivityMeasure", "IfcThermalExpansionCoefficientMeasure", "IfcThermalResistanceMeasure", "IfcThermalTransmittanceMeasure", "IfcThermodynamicTemperatureMeasure", "IfcTime", "IfcTimeMeasure", "IfcTimeOrRatioSelect", "IfcTimePeriod", "IfcTimeSeries", "IfcTimeSeriesDataTypeEnum", "IfcTimeSeriesValue", "IfcTimeStamp", "IfcTopologicalRepresentationItem", "IfcTopologyRepresentation", "IfcTorqueMeasure", "IfcTransformer", "IfcTransformerType", "IfcTransformerTypeEnum", "IfcTransitionCode", "IfcTranslationalStiffnessSelect", "IfcTransportElement", "IfcTransportElementType", "IfcTransportElementTypeEnum", "IfcTrapeziumProfileDef", "IfcTriangulatedFaceSet", "IfcTrimmedCurve", "IfcTrimmingPreference", "IfcTrimmingSelect", "IfcTubeBundle", "IfcTubeBundleType", "IfcTubeBundleTypeEnum", "IfcTypeObject", "IfcTypeProcess", "IfcTypeProduct", "IfcTypeResource", "IfcURIReference", "IfcUShapeProfileDef", "IfcUnit", "IfcUnitAssignment", "IfcUnitEnum", "IfcUnitaryControlElement", "IfcUnitaryControlElementType", "IfcUnitaryControlElementTypeEnum", "IfcUnitaryEquipment", "IfcUnitaryEquipmentType", "IfcUnitaryEquipmentTypeEnum", "IfcValue", "IfcValve", "IfcValveType", "IfcValveTypeEnum", "IfcVaporPermeabilityMeasure", "IfcVector", "IfcVectorOrDirection", "IfcVertex", "IfcVertexLoop", "IfcVertexPoint", "IfcVibrationIsolator", "IfcVibrationIsolatorType", "IfcVibrationIsolatorTypeEnum", "IfcVirtualElement", "IfcVirtualGridIntersection", "IfcVoidingFeature", "IfcVoidingFeatureTypeEnum", "IfcVolumeMeasure", "IfcVolumetricFlowRateMeasure", "IfcWall", "IfcWallElementedCase", "IfcWallStandardCase", "IfcWallType", "IfcWallTypeEnum", "IfcWarpingConstantMeasure", "IfcWarpingMomentMeasure", "IfcWarpingStiffnessSelect", "IfcWasteTerminal", "IfcWasteTerminalType", "IfcWasteTerminalTypeEnum", "IfcWindow", "IfcWindowLiningProperties", "IfcWindowPanelOperationEnum", "IfcWindowPanelPositionEnum", "IfcWindowPanelProperties", "IfcWindowStandardCase", "IfcWindowStyle", "IfcWindowStyleConstructionEnum", "IfcWindowStyleOperationEnum", "IfcWindowType", "IfcWindowTypeEnum", "IfcWindowTypePartitioningEnum", "IfcWorkCalendar", "IfcWorkCalendarTypeEnum", "IfcWorkControl", "IfcWorkPlan", "IfcWorkPlanTypeEnum", "IfcWorkSchedule", "IfcWorkScheduleTypeEnum", "IfcWorkTime", "IfcZShapeProfileDef", "IfcZone" };
+    static std::string names[] = { "IfcAbsorbedDoseMeasure", "IfcAccelerationMeasure", "IfcActionRequest", "IfcActionRequestTypeEnum", "IfcActionSourceTypeEnum", "IfcActionTypeEnum", "IfcActor", "IfcActorRole", "IfcActorSelect", "IfcActuator", "IfcActuatorType", "IfcActuatorTypeEnum", "IfcAddress", "IfcAddressTypeEnum", "IfcAdvancedBrep", "IfcAdvancedBrepWithVoids", "IfcAdvancedFace", "IfcAirTerminal", "IfcAirTerminalBox", "IfcAirTerminalBoxType", "IfcAirTerminalBoxTypeEnum", "IfcAirTerminalType", "IfcAirTerminalTypeEnum", "IfcAirToAirHeatRecovery", "IfcAirToAirHeatRecoveryType", "IfcAirToAirHeatRecoveryTypeEnum", "IfcAlarm", "IfcAlarmType", "IfcAlarmTypeEnum", "IfcAmountOfSubstanceMeasure", "IfcAnalysisModelTypeEnum", "IfcAnalysisTheoryTypeEnum", "IfcAngularVelocityMeasure", "IfcAnnotation", "IfcAnnotationFillArea", "IfcApplication", "IfcAppliedValue", "IfcAppliedValueSelect", "IfcApproval", "IfcApprovalRelationship", "IfcArbitraryClosedProfileDef", "IfcArbitraryOpenProfileDef", "IfcArbitraryProfileDefWithVoids", "IfcArcIndex", "IfcAreaDensityMeasure", "IfcAreaMeasure", "IfcArithmeticOperatorEnum", "IfcAssemblyPlaceEnum", "IfcAsset", "IfcAsymmetricIShapeProfileDef", "IfcAudioVisualAppliance", "IfcAudioVisualApplianceType", "IfcAudioVisualApplianceTypeEnum", "IfcAxis1Placement", "IfcAxis2Placement", "IfcAxis2Placement2D", "IfcAxis2Placement3D", "IfcBSplineCurve", "IfcBSplineCurveForm", "IfcBSplineCurveWithKnots", "IfcBSplineSurface", "IfcBSplineSurfaceForm", "IfcBSplineSurfaceWithKnots", "IfcBeam", "IfcBeamStandardCase", "IfcBeamType", "IfcBeamTypeEnum", "IfcBenchmarkEnum", "IfcBendingParameterSelect", "IfcBinary", "IfcBlobTexture", "IfcBlock", "IfcBoiler", "IfcBoilerType", "IfcBoilerTypeEnum", "IfcBoolean", "IfcBooleanClippingResult", "IfcBooleanOperand", "IfcBooleanOperator", "IfcBooleanResult", "IfcBoundaryCondition", "IfcBoundaryCurve", "IfcBoundaryEdgeCondition", "IfcBoundaryFaceCondition", "IfcBoundaryNodeCondition", "IfcBoundaryNodeConditionWarping", "IfcBoundedCurve", "IfcBoundedSurface", "IfcBoundingBox", "IfcBoxAlignment", "IfcBoxedHalfSpace", "IfcBuilding", "IfcBuildingElement", "IfcBuildingElementPart", "IfcBuildingElementPartType", "IfcBuildingElementPartTypeEnum", "IfcBuildingElementProxy", "IfcBuildingElementProxyType", "IfcBuildingElementProxyTypeEnum", "IfcBuildingElementType", "IfcBuildingStorey", "IfcBuildingSystem", "IfcBuildingSystemTypeEnum", "IfcBurner", "IfcBurnerType", "IfcBurnerTypeEnum", "IfcCShapeProfileDef", "IfcCableCarrierFitting", "IfcCableCarrierFittingType", "IfcCableCarrierFittingTypeEnum", "IfcCableCarrierSegment", "IfcCableCarrierSegmentType", "IfcCableCarrierSegmentTypeEnum", "IfcCableFitting", "IfcCableFittingType", "IfcCableFittingTypeEnum", "IfcCableSegment", "IfcCableSegmentType", "IfcCableSegmentTypeEnum", "IfcCardinalPointReference", "IfcCartesianPoint", "IfcCartesianPointList", "IfcCartesianPointList2D", "IfcCartesianPointList3D", "IfcCartesianTransformationOperator", "IfcCartesianTransformationOperator2D", "IfcCartesianTransformationOperator2DnonUniform", "IfcCartesianTransformationOperator3D", "IfcCartesianTransformationOperator3DnonUniform", "IfcCenterLineProfileDef", "IfcChangeActionEnum", "IfcChiller", "IfcChillerType", "IfcChillerTypeEnum", "IfcChimney", "IfcChimneyType", "IfcChimneyTypeEnum", "IfcCircle", "IfcCircleHollowProfileDef", "IfcCircleProfileDef", "IfcCivilElement", "IfcCivilElementType", "IfcClassification", "IfcClassificationReference", "IfcClassificationReferenceSelect", "IfcClassificationSelect", "IfcClosedShell", "IfcCoil", "IfcCoilType", "IfcCoilTypeEnum", "IfcColour", "IfcColourOrFactor", "IfcColourRgb", "IfcColourRgbList", "IfcColourSpecification", "IfcColumn", "IfcColumnStandardCase", "IfcColumnType", "IfcColumnTypeEnum", "IfcCommunicationsAppliance", "IfcCommunicationsApplianceType", "IfcCommunicationsApplianceTypeEnum", "IfcComplexNumber", "IfcComplexProperty", "IfcComplexPropertyTemplate", "IfcComplexPropertyTemplateTypeEnum", "IfcCompositeCurve", "IfcCompositeCurveOnSurface", "IfcCompositeCurveSegment", "IfcCompositeProfileDef", "IfcCompoundPlaneAngleMeasure", "IfcCompressor", "IfcCompressorType", "IfcCompressorTypeEnum", "IfcCondenser", "IfcCondenserType", "IfcCondenserTypeEnum", "IfcConic", "IfcConnectedFaceSet", "IfcConnectionCurveGeometry", "IfcConnectionGeometry", "IfcConnectionPointEccentricity", "IfcConnectionPointGeometry", "IfcConnectionSurfaceGeometry", "IfcConnectionTypeEnum", "IfcConnectionVolumeGeometry", "IfcConstraint", "IfcConstraintEnum", "IfcConstructionEquipmentResource", "IfcConstructionEquipmentResourceType", "IfcConstructionEquipmentResourceTypeEnum", "IfcConstructionMaterialResource", "IfcConstructionMaterialResourceType", "IfcConstructionMaterialResourceTypeEnum", "IfcConstructionProductResource", "IfcConstructionProductResourceType", "IfcConstructionProductResourceTypeEnum", "IfcConstructionResource", "IfcConstructionResourceType", "IfcContext", "IfcContextDependentMeasure", "IfcContextDependentUnit", "IfcControl", "IfcController", "IfcControllerType", "IfcControllerTypeEnum", "IfcConversionBasedUnit", "IfcConversionBasedUnitWithOffset", "IfcCooledBeam", "IfcCooledBeamType", "IfcCooledBeamTypeEnum", "IfcCoolingTower", "IfcCoolingTowerType", "IfcCoolingTowerTypeEnum", "IfcCoordinateOperation", "IfcCoordinateReferenceSystem", "IfcCoordinateReferenceSystemSelect", "IfcCostItem", "IfcCostItemTypeEnum", "IfcCostSchedule", "IfcCostScheduleTypeEnum", "IfcCostValue", "IfcCountMeasure", "IfcCovering", "IfcCoveringType", "IfcCoveringTypeEnum", "IfcCrewResource", "IfcCrewResourceType", "IfcCrewResourceTypeEnum", "IfcCsgPrimitive3D", "IfcCsgSelect", "IfcCsgSolid", "IfcCurrencyRelationship", "IfcCurtainWall", "IfcCurtainWallType", "IfcCurtainWallTypeEnum", "IfcCurvatureMeasure", "IfcCurve", "IfcCurveBoundedPlane", "IfcCurveBoundedSurface", "IfcCurveFontOrScaledCurveFontSelect", "IfcCurveInterpolationEnum", "IfcCurveOnSurface", "IfcCurveOrEdgeCurve", "IfcCurveStyle", "IfcCurveStyleFont", "IfcCurveStyleFontAndScaling", "IfcCurveStyleFontPattern", "IfcCurveStyleFontSelect", "IfcCylindricalSurface", "IfcDamper", "IfcDamperType", "IfcDamperTypeEnum", "IfcDataOriginEnum", "IfcDate", "IfcDateTime", "IfcDayInMonthNumber", "IfcDayInWeekNumber", "IfcDefinitionSelect", "IfcDerivedMeasureValue", "IfcDerivedProfileDef", "IfcDerivedUnit", "IfcDerivedUnitElement", "IfcDerivedUnitEnum", "IfcDescriptiveMeasure", "IfcDimensionCount", "IfcDimensionalExponents", "IfcDirection", "IfcDirectionSenseEnum", "IfcDiscreteAccessory", "IfcDiscreteAccessoryType", "IfcDiscreteAccessoryTypeEnum", "IfcDistributionChamberElement", "IfcDistributionChamberElementType", "IfcDistributionChamberElementTypeEnum", "IfcDistributionCircuit", "IfcDistributionControlElement", "IfcDistributionControlElementType", "IfcDistributionElement", "IfcDistributionElementType", "IfcDistributionFlowElement", "IfcDistributionFlowElementType", "IfcDistributionPort", "IfcDistributionPortTypeEnum", "IfcDistributionSystem", "IfcDistributionSystemEnum", "IfcDocumentConfidentialityEnum", "IfcDocumentInformation", "IfcDocumentInformationRelationship", "IfcDocumentReference", "IfcDocumentSelect", "IfcDocumentStatusEnum", "IfcDoor", "IfcDoorLiningProperties", "IfcDoorPanelOperationEnum", "IfcDoorPanelPositionEnum", "IfcDoorPanelProperties", "IfcDoorStandardCase", "IfcDoorStyle", "IfcDoorStyleConstructionEnum", "IfcDoorStyleOperationEnum", "IfcDoorType", "IfcDoorTypeEnum", "IfcDoorTypeOperationEnum", "IfcDoseEquivalentMeasure", "IfcDraughtingPreDefinedColour", "IfcDraughtingPreDefinedCurveFont", "IfcDuctFitting", "IfcDuctFittingType", "IfcDuctFittingTypeEnum", "IfcDuctSegment", "IfcDuctSegmentType", "IfcDuctSegmentTypeEnum", "IfcDuctSilencer", "IfcDuctSilencerType", "IfcDuctSilencerTypeEnum", "IfcDuration", "IfcDynamicViscosityMeasure", "IfcEdge", "IfcEdgeCurve", "IfcEdgeLoop", "IfcElectricAppliance", "IfcElectricApplianceType", "IfcElectricApplianceTypeEnum", "IfcElectricCapacitanceMeasure", "IfcElectricChargeMeasure", "IfcElectricConductanceMeasure", "IfcElectricCurrentMeasure", "IfcElectricDistributionBoard", "IfcElectricDistributionBoardType", "IfcElectricDistributionBoardTypeEnum", "IfcElectricFlowStorageDevice", "IfcElectricFlowStorageDeviceType", "IfcElectricFlowStorageDeviceTypeEnum", "IfcElectricGenerator", "IfcElectricGeneratorType", "IfcElectricGeneratorTypeEnum", "IfcElectricMotor", "IfcElectricMotorType", "IfcElectricMotorTypeEnum", "IfcElectricResistanceMeasure", "IfcElectricTimeControl", "IfcElectricTimeControlType", "IfcElectricTimeControlTypeEnum", "IfcElectricVoltageMeasure", "IfcElement", "IfcElementAssembly", "IfcElementAssemblyType", "IfcElementAssemblyTypeEnum", "IfcElementComponent", "IfcElementComponentType", "IfcElementCompositionEnum", "IfcElementQuantity", "IfcElementType", "IfcElementarySurface", "IfcEllipse", "IfcEllipseProfileDef", "IfcEnergyConversionDevice", "IfcEnergyConversionDeviceType", "IfcEnergyMeasure", "IfcEngine", "IfcEngineType", "IfcEngineTypeEnum", "IfcEvaporativeCooler", "IfcEvaporativeCoolerType", "IfcEvaporativeCoolerTypeEnum", "IfcEvaporator", "IfcEvaporatorType", "IfcEvaporatorTypeEnum", "IfcEvent", "IfcEventTime", "IfcEventTriggerTypeEnum", "IfcEventType", "IfcEventTypeEnum", "IfcExtendedProperties", "IfcExternalInformation", "IfcExternalReference", "IfcExternalReferenceRelationship", "IfcExternalSpatialElement", "IfcExternalSpatialElementTypeEnum", "IfcExternalSpatialStructureElement", "IfcExternallyDefinedHatchStyle", "IfcExternallyDefinedSurfaceStyle", "IfcExternallyDefinedTextFont", "IfcExtrudedAreaSolid", "IfcExtrudedAreaSolidTapered", "IfcFace", "IfcFaceBasedSurfaceModel", "IfcFaceBound", "IfcFaceOuterBound", "IfcFaceSurface", "IfcFacetedBrep", "IfcFacetedBrepWithVoids", "IfcFailureConnectionCondition", "IfcFan", "IfcFanType", "IfcFanTypeEnum", "IfcFastener", "IfcFastenerType", "IfcFastenerTypeEnum", "IfcFeatureElement", "IfcFeatureElementAddition", "IfcFeatureElementSubtraction", "IfcFillAreaStyle", "IfcFillAreaStyleHatching", "IfcFillAreaStyleTiles", "IfcFillStyleSelect", "IfcFilter", "IfcFilterType", "IfcFilterTypeEnum", "IfcFireSuppressionTerminal", "IfcFireSuppressionTerminalType", "IfcFireSuppressionTerminalTypeEnum", "IfcFixedReferenceSweptAreaSolid", "IfcFlowController", "IfcFlowControllerType", "IfcFlowDirectionEnum", "IfcFlowFitting", "IfcFlowFittingType", "IfcFlowInstrument", "IfcFlowInstrumentType", "IfcFlowInstrumentTypeEnum", "IfcFlowMeter", "IfcFlowMeterType", "IfcFlowMeterTypeEnum", "IfcFlowMovingDevice", "IfcFlowMovingDeviceType", "IfcFlowSegment", "IfcFlowSegmentType", "IfcFlowStorageDevice", "IfcFlowStorageDeviceType", "IfcFlowTerminal", "IfcFlowTerminalType", "IfcFlowTreatmentDevice", "IfcFlowTreatmentDeviceType", "IfcFontStyle", "IfcFontVariant", "IfcFontWeight", "IfcFooting", "IfcFootingType", "IfcFootingTypeEnum", "IfcForceMeasure", "IfcFrequencyMeasure", "IfcFurnishingElement", "IfcFurnishingElementType", "IfcFurniture", "IfcFurnitureType", "IfcFurnitureTypeEnum", "IfcGeographicElement", "IfcGeographicElementType", "IfcGeographicElementTypeEnum", "IfcGeometricCurveSet", "IfcGeometricProjectionEnum", "IfcGeometricRepresentationContext", "IfcGeometricRepresentationItem", "IfcGeometricRepresentationSubContext", "IfcGeometricSet", "IfcGeometricSetSelect", "IfcGlobalOrLocalEnum", "IfcGloballyUniqueId", "IfcGrid", "IfcGridAxis", "IfcGridPlacement", "IfcGridPlacementDirectionSelect", "IfcGridTypeEnum", "IfcGroup", "IfcHalfSpaceSolid", "IfcHatchLineDistanceSelect", "IfcHeatExchanger", "IfcHeatExchangerType", "IfcHeatExchangerTypeEnum", "IfcHeatFluxDensityMeasure", "IfcHeatingValueMeasure", "IfcHumidifier", "IfcHumidifierType", "IfcHumidifierTypeEnum", "IfcIShapeProfileDef", "IfcIdentifier", "IfcIlluminanceMeasure", "IfcImageTexture", "IfcIndexedColourMap", "IfcIndexedPolyCurve", "IfcIndexedTextureMap", "IfcIndexedTriangleTextureMap", "IfcInductanceMeasure", "IfcInteger", "IfcIntegerCountRateMeasure", "IfcInterceptor", "IfcInterceptorType", "IfcInterceptorTypeEnum", "IfcInternalOrExternalEnum", "IfcInventory", "IfcInventoryTypeEnum", "IfcIonConcentrationMeasure", "IfcIrregularTimeSeries", "IfcIrregularTimeSeriesValue", "IfcIsothermalMoistureCapacityMeasure", "IfcJunctionBox", "IfcJunctionBoxType", "IfcJunctionBoxTypeEnum", "IfcKinematicViscosityMeasure", "IfcKnotType", "IfcLShapeProfileDef", "IfcLabel", "IfcLaborResource", "IfcLaborResourceType", "IfcLaborResourceTypeEnum", "IfcLagTime", "IfcLamp", "IfcLampType", "IfcLampTypeEnum", "IfcLanguageId", "IfcLayerSetDirectionEnum", "IfcLayeredItem", "IfcLengthMeasure", "IfcLibraryInformation", "IfcLibraryReference", "IfcLibrarySelect", "IfcLightDistributionCurveEnum", "IfcLightDistributionData", "IfcLightDistributionDataSourceSelect", "IfcLightEmissionSourceEnum", "IfcLightFixture", "IfcLightFixtureType", "IfcLightFixtureTypeEnum", "IfcLightIntensityDistribution", "IfcLightSource", "IfcLightSourceAmbient", "IfcLightSourceDirectional", "IfcLightSourceGoniometric", "IfcLightSourcePositional", "IfcLightSourceSpot", "IfcLine", "IfcLineIndex", "IfcLinearForceMeasure", "IfcLinearMomentMeasure", "IfcLinearStiffnessMeasure", "IfcLinearVelocityMeasure", "IfcLoadGroupTypeEnum", "IfcLocalPlacement", "IfcLogical", "IfcLogicalOperatorEnum", "IfcLoop", "IfcLuminousFluxMeasure", "IfcLuminousIntensityDistributionMeasure", "IfcLuminousIntensityMeasure", "IfcMagneticFluxDensityMeasure", "IfcMagneticFluxMeasure", "IfcManifoldSolidBrep", "IfcMapConversion", "IfcMappedItem", "IfcMassDensityMeasure", "IfcMassFlowRateMeasure", "IfcMassMeasure", "IfcMassPerLengthMeasure", "IfcMaterial", "IfcMaterialClassificationRelationship", "IfcMaterialConstituent", "IfcMaterialConstituentSet", "IfcMaterialDefinition", "IfcMaterialDefinitionRepresentation", "IfcMaterialLayer", "IfcMaterialLayerSet", "IfcMaterialLayerSetUsage", "IfcMaterialLayerWithOffsets", "IfcMaterialList", "IfcMaterialProfile", "IfcMaterialProfileSet", "IfcMaterialProfileSetUsage", "IfcMaterialProfileSetUsageTapering", "IfcMaterialProfileWithOffsets", "IfcMaterialProperties", "IfcMaterialRelationship", "IfcMaterialSelect", "IfcMaterialUsageDefinition", "IfcMeasureValue", "IfcMeasureWithUnit", "IfcMechanicalFastener", "IfcMechanicalFastenerType", "IfcMechanicalFastenerTypeEnum", "IfcMedicalDevice", "IfcMedicalDeviceType", "IfcMedicalDeviceTypeEnum", "IfcMember", "IfcMemberStandardCase", "IfcMemberType", "IfcMemberTypeEnum", "IfcMetric", "IfcMetricValueSelect", "IfcMirroredProfileDef", "IfcModulusOfElasticityMeasure", "IfcModulusOfLinearSubgradeReactionMeasure", "IfcModulusOfRotationalSubgradeReactionMeasure", "IfcModulusOfRotationalSubgradeReactionSelect", "IfcModulusOfSubgradeReactionMeasure", "IfcModulusOfSubgradeReactionSelect", "IfcModulusOfTranslationalSubgradeReactionSelect", "IfcMoistureDiffusivityMeasure", "IfcMolecularWeightMeasure", "IfcMomentOfInertiaMeasure", "IfcMonetaryMeasure", "IfcMonetaryUnit", "IfcMonthInYearNumber", "IfcMotorConnection", "IfcMotorConnectionType", "IfcMotorConnectionTypeEnum", "IfcNamedUnit", "IfcNonNegativeLengthMeasure", "IfcNormalisedRatioMeasure", "IfcNullStyle", "IfcNumericMeasure", "IfcObject", "IfcObjectDefinition", "IfcObjectPlacement", "IfcObjectReferenceSelect", "IfcObjectTypeEnum", "IfcObjective", "IfcObjectiveEnum", "IfcOccupant", "IfcOccupantTypeEnum", "IfcOffsetCurve2D", "IfcOffsetCurve3D", "IfcOpenShell", "IfcOpeningElement", "IfcOpeningElementTypeEnum", "IfcOpeningStandardCase", "IfcOrganization", "IfcOrganizationRelationship", "IfcOrientedEdge", "IfcOuterBoundaryCurve", "IfcOutlet", "IfcOutletType", "IfcOutletTypeEnum", "IfcOwnerHistory", "IfcPHMeasure", "IfcParameterValue", "IfcParameterizedProfileDef", "IfcPath", "IfcPcurve", "IfcPerformanceHistory", "IfcPerformanceHistoryTypeEnum", "IfcPermeableCoveringOperationEnum", "IfcPermeableCoveringProperties", "IfcPermit", "IfcPermitTypeEnum", "IfcPerson", "IfcPersonAndOrganization", "IfcPhysicalComplexQuantity", "IfcPhysicalOrVirtualEnum", "IfcPhysicalQuantity", "IfcPhysicalSimpleQuantity", "IfcPile", "IfcPileConstructionEnum", "IfcPileType", "IfcPileTypeEnum", "IfcPipeFitting", "IfcPipeFittingType", "IfcPipeFittingTypeEnum", "IfcPipeSegment", "IfcPipeSegmentType", "IfcPipeSegmentTypeEnum", "IfcPixelTexture", "IfcPlacement", "IfcPlanarBox", "IfcPlanarExtent", "IfcPlanarForceMeasure", "IfcPlane", "IfcPlaneAngleMeasure", "IfcPlate", "IfcPlateStandardCase", "IfcPlateType", "IfcPlateTypeEnum", "IfcPoint", "IfcPointOnCurve", "IfcPointOnSurface", "IfcPointOrVertexPoint", "IfcPolyLoop", "IfcPolygonalBoundedHalfSpace", "IfcPolyline", "IfcPort", "IfcPositiveInteger", "IfcPositiveLengthMeasure", "IfcPositivePlaneAngleMeasure", "IfcPositiveRatioMeasure", "IfcPostalAddress", "IfcPowerMeasure", "IfcPreDefinedColour", "IfcPreDefinedCurveFont", "IfcPreDefinedItem", "IfcPreDefinedProperties", "IfcPreDefinedPropertySet", "IfcPreDefinedTextFont", "IfcPresentableText", "IfcPresentationItem", "IfcPresentationLayerAssignment", "IfcPresentationLayerWithStyle", "IfcPresentationStyle", "IfcPresentationStyleAssignment", "IfcPresentationStyleSelect", "IfcPressureMeasure", "IfcProcedure", "IfcProcedureType", "IfcProcedureTypeEnum", "IfcProcess", "IfcProcessSelect", "IfcProduct", "IfcProductDefinitionShape", "IfcProductRepresentation", "IfcProductRepresentationSelect", "IfcProductSelect", "IfcProfileDef", "IfcProfileProperties", "IfcProfileTypeEnum", "IfcProject", "IfcProjectLibrary", "IfcProjectOrder", "IfcProjectOrderTypeEnum", "IfcProjectedCRS", "IfcProjectedOrTrueLengthEnum", "IfcProjectionElement", "IfcProjectionElementTypeEnum", "IfcProperty", "IfcPropertyAbstraction", "IfcPropertyBoundedValue", "IfcPropertyDefinition", "IfcPropertyDependencyRelationship", "IfcPropertyEnumeratedValue", "IfcPropertyEnumeration", "IfcPropertyListValue", "IfcPropertyReferenceValue", "IfcPropertySet", "IfcPropertySetDefinition", "IfcPropertySetDefinitionSelect", "IfcPropertySetDefinitionSet", "IfcPropertySetTemplate", "IfcPropertySetTemplateTypeEnum", "IfcPropertySingleValue", "IfcPropertyTableValue", "IfcPropertyTemplate", "IfcPropertyTemplateDefinition", "IfcProtectiveDevice", "IfcProtectiveDeviceTrippingUnit", "IfcProtectiveDeviceTrippingUnitType", "IfcProtectiveDeviceTrippingUnitTypeEnum", "IfcProtectiveDeviceType", "IfcProtectiveDeviceTypeEnum", "IfcProxy", "IfcPump", "IfcPumpType", "IfcPumpTypeEnum", "IfcQuantityArea", "IfcQuantityCount", "IfcQuantityLength", "IfcQuantitySet", "IfcQuantityTime", "IfcQuantityVolume", "IfcQuantityWeight", "IfcRadioActivityMeasure", "IfcRailing", "IfcRailingType", "IfcRailingTypeEnum", "IfcRamp", "IfcRampFlight", "IfcRampFlightType", "IfcRampFlightTypeEnum", "IfcRampType", "IfcRampTypeEnum", "IfcRatioMeasure", "IfcRationalBSplineCurveWithKnots", "IfcRationalBSplineSurfaceWithKnots", "IfcReal", "IfcRectangleHollowProfileDef", "IfcRectangleProfileDef", "IfcRectangularPyramid", "IfcRectangularTrimmedSurface", "IfcRecurrencePattern", "IfcRecurrenceTypeEnum", "IfcReference", "IfcReflectanceMethodEnum", "IfcRegularTimeSeries", "IfcReinforcementBarProperties", "IfcReinforcementDefinitionProperties", "IfcReinforcingBar", "IfcReinforcingBarRoleEnum", "IfcReinforcingBarSurfaceEnum", "IfcReinforcingBarType", "IfcReinforcingBarTypeEnum", "IfcReinforcingElement", "IfcReinforcingElementType", "IfcReinforcingMesh", "IfcReinforcingMeshType", "IfcReinforcingMeshTypeEnum", "IfcRelAggregates", "IfcRelAssigns", "IfcRelAssignsToActor", "IfcRelAssignsToControl", "IfcRelAssignsToGroup", "IfcRelAssignsToGroupByFactor", "IfcRelAssignsToProcess", "IfcRelAssignsToProduct", "IfcRelAssignsToResource", "IfcRelAssociates", "IfcRelAssociatesApproval", "IfcRelAssociatesClassification", "IfcRelAssociatesConstraint", "IfcRelAssociatesDocument", "IfcRelAssociatesLibrary", "IfcRelAssociatesMaterial", "IfcRelConnects", "IfcRelConnectsElements", "IfcRelConnectsPathElements", "IfcRelConnectsPortToElement", "IfcRelConnectsPorts", "IfcRelConnectsStructuralActivity", "IfcRelConnectsStructuralMember", "IfcRelConnectsWithEccentricity", "IfcRelConnectsWithRealizingElements", "IfcRelContainedInSpatialStructure", "IfcRelCoversBldgElements", "IfcRelCoversSpaces", "IfcRelDeclares", "IfcRelDecomposes", "IfcRelDefines", "IfcRelDefinesByObject", "IfcRelDefinesByProperties", "IfcRelDefinesByTemplate", "IfcRelDefinesByType", "IfcRelFillsElement", "IfcRelFlowControlElements", "IfcRelInterferesElements", "IfcRelNests", "IfcRelProjectsElement", "IfcRelReferencedInSpatialStructure", "IfcRelSequence", "IfcRelServicesBuildings", "IfcRelSpaceBoundary", "IfcRelSpaceBoundary1stLevel", "IfcRelSpaceBoundary2ndLevel", "IfcRelVoidsElement", "IfcRelationship", "IfcReparametrisedCompositeCurveSegment", "IfcRepresentation", "IfcRepresentationContext", "IfcRepresentationItem", "IfcRepresentationMap", "IfcResource", "IfcResourceApprovalRelationship", "IfcResourceConstraintRelationship", "IfcResourceLevelRelationship", "IfcResourceObjectSelect", "IfcResourceSelect", "IfcResourceTime", "IfcRevolvedAreaSolid", "IfcRevolvedAreaSolidTapered", "IfcRightCircularCone", "IfcRightCircularCylinder", "IfcRoleEnum", "IfcRoof", "IfcRoofType", "IfcRoofTypeEnum", "IfcRoot", "IfcRotationalFrequencyMeasure", "IfcRotationalMassMeasure", "IfcRotationalStiffnessMeasure", "IfcRotationalStiffnessSelect", "IfcRoundedRectangleProfileDef", "IfcSIPrefix", "IfcSIUnit", "IfcSIUnitName", "IfcSanitaryTerminal", "IfcSanitaryTerminalType", "IfcSanitaryTerminalTypeEnum", "IfcSchedulingTime", "IfcSectionModulusMeasure", "IfcSectionProperties", "IfcSectionReinforcementProperties", "IfcSectionTypeEnum", "IfcSectionalAreaIntegralMeasure", "IfcSectionedSpine", "IfcSegmentIndexSelect", "IfcSensor", "IfcSensorType", "IfcSensorTypeEnum", "IfcSequenceEnum", "IfcShadingDevice", "IfcShadingDeviceType", "IfcShadingDeviceTypeEnum", "IfcShapeAspect", "IfcShapeModel", "IfcShapeRepresentation", "IfcShearModulusMeasure", "IfcShell", "IfcShellBasedSurfaceModel", "IfcSimpleProperty", "IfcSimplePropertyTemplate", "IfcSimplePropertyTemplateTypeEnum", "IfcSimpleValue", "IfcSite", "IfcSizeSelect", "IfcSlab", "IfcSlabElementedCase", "IfcSlabStandardCase", "IfcSlabType", "IfcSlabTypeEnum", "IfcSlippageConnectionCondition", "IfcSolarDevice", "IfcSolarDeviceType", "IfcSolarDeviceTypeEnum", "IfcSolidAngleMeasure", "IfcSolidModel", "IfcSolidOrShell", "IfcSoundPowerLevelMeasure", "IfcSoundPowerMeasure", "IfcSoundPressureLevelMeasure", "IfcSoundPressureMeasure", "IfcSpace", "IfcSpaceBoundarySelect", "IfcSpaceHeater", "IfcSpaceHeaterType", "IfcSpaceHeaterTypeEnum", "IfcSpaceType", "IfcSpaceTypeEnum", "IfcSpatialElement", "IfcSpatialElementType", "IfcSpatialStructureElement", "IfcSpatialStructureElementType", "IfcSpatialZone", "IfcSpatialZoneType", "IfcSpatialZoneTypeEnum", "IfcSpecificHeatCapacityMeasure", "IfcSpecularExponent", "IfcSpecularHighlightSelect", "IfcSpecularRoughness", "IfcSphere", "IfcStackTerminal", "IfcStackTerminalType", "IfcStackTerminalTypeEnum", "IfcStair", "IfcStairFlight", "IfcStairFlightType", "IfcStairFlightTypeEnum", "IfcStairType", "IfcStairTypeEnum", "IfcStateEnum", "IfcStrippedOptional", "IfcStructuralAction", "IfcStructuralActivity", "IfcStructuralActivityAssignmentSelect", "IfcStructuralAnalysisModel", "IfcStructuralConnection", "IfcStructuralConnectionCondition", "IfcStructuralCurveAction", "IfcStructuralCurveActivityTypeEnum", "IfcStructuralCurveConnection", "IfcStructuralCurveMember", "IfcStructuralCurveMemberTypeEnum", "IfcStructuralCurveMemberVarying", "IfcStructuralCurveReaction", "IfcStructuralItem", "IfcStructuralLinearAction", "IfcStructuralLoad", "IfcStructuralLoadCase", "IfcStructuralLoadConfiguration", "IfcStructuralLoadGroup", "IfcStructuralLoadLinearForce", "IfcStructuralLoadOrResult", "IfcStructuralLoadPlanarForce", "IfcStructuralLoadSingleDisplacement", "IfcStructuralLoadSingleDisplacementDistortion", "IfcStructuralLoadSingleForce", "IfcStructuralLoadSingleForceWarping", "IfcStructuralLoadStatic", "IfcStructuralLoadTemperature", "IfcStructuralMember", "IfcStructuralPlanarAction", "IfcStructuralPointAction", "IfcStructuralPointConnection", "IfcStructuralPointReaction", "IfcStructuralReaction", "IfcStructuralResultGroup", "IfcStructuralSurfaceAction", "IfcStructuralSurfaceActivityTypeEnum", "IfcStructuralSurfaceConnection", "IfcStructuralSurfaceMember", "IfcStructuralSurfaceMemberTypeEnum", "IfcStructuralSurfaceMemberVarying", "IfcStructuralSurfaceReaction", "IfcStyleAssignmentSelect", "IfcStyleModel", "IfcStyledItem", "IfcStyledRepresentation", "IfcSubContractResource", "IfcSubContractResourceType", "IfcSubContractResourceTypeEnum", "IfcSubedge", "IfcSurface", "IfcSurfaceCurveSweptAreaSolid", "IfcSurfaceFeature", "IfcSurfaceFeatureTypeEnum", "IfcSurfaceOfLinearExtrusion", "IfcSurfaceOfRevolution", "IfcSurfaceOrFaceSurface", "IfcSurfaceReinforcementArea", "IfcSurfaceSide", "IfcSurfaceStyle", "IfcSurfaceStyleElementSelect", "IfcSurfaceStyleLighting", "IfcSurfaceStyleRefraction", "IfcSurfaceStyleRendering", "IfcSurfaceStyleShading", "IfcSurfaceStyleWithTextures", "IfcSurfaceTexture", "IfcSweptAreaSolid", "IfcSweptDiskSolid", "IfcSweptDiskSolidPolygonal", "IfcSweptSurface", "IfcSwitchingDevice", "IfcSwitchingDeviceType", "IfcSwitchingDeviceTypeEnum", "IfcSystem", "IfcSystemFurnitureElement", "IfcSystemFurnitureElementType", "IfcSystemFurnitureElementTypeEnum", "IfcTShapeProfileDef", "IfcTable", "IfcTableColumn", "IfcTableRow", "IfcTank", "IfcTankType", "IfcTankTypeEnum", "IfcTask", "IfcTaskDurationEnum", "IfcTaskTime", "IfcTaskTimeRecurring", "IfcTaskType", "IfcTaskTypeEnum", "IfcTelecomAddress", "IfcTemperatureGradientMeasure", "IfcTemperatureRateOfChangeMeasure", "IfcTendon", "IfcTendonAnchor", "IfcTendonAnchorType", "IfcTendonAnchorTypeEnum", "IfcTendonType", "IfcTendonTypeEnum", "IfcTessellatedFaceSet", "IfcTessellatedItem", "IfcText", "IfcTextAlignment", "IfcTextDecoration", "IfcTextFontName", "IfcTextFontSelect", "IfcTextLiteral", "IfcTextLiteralWithExtent", "IfcTextPath", "IfcTextStyle", "IfcTextStyleFontModel", "IfcTextStyleForDefinedFont", "IfcTextStyleTextModel", "IfcTextTransformation", "IfcTextureCoordinate", "IfcTextureCoordinateGenerator", "IfcTextureMap", "IfcTextureVertex", "IfcTextureVertexList", "IfcThermalAdmittanceMeasure", "IfcThermalConductivityMeasure", "IfcThermalExpansionCoefficientMeasure", "IfcThermalResistanceMeasure", "IfcThermalTransmittanceMeasure", "IfcThermodynamicTemperatureMeasure", "IfcTime", "IfcTimeMeasure", "IfcTimeOrRatioSelect", "IfcTimePeriod", "IfcTimeSeries", "IfcTimeSeriesDataTypeEnum", "IfcTimeSeriesValue", "IfcTimeStamp", "IfcTopologicalRepresentationItem", "IfcTopologyRepresentation", "IfcTorqueMeasure", "IfcTransformer", "IfcTransformerType", "IfcTransformerTypeEnum", "IfcTransitionCode", "IfcTranslationalStiffnessSelect", "IfcTransportElement", "IfcTransportElementType", "IfcTransportElementTypeEnum", "IfcTrapeziumProfileDef", "IfcTriangulatedFaceSet", "IfcTrimmedCurve", "IfcTrimmingPreference", "IfcTrimmingSelect", "IfcTubeBundle", "IfcTubeBundleType", "IfcTubeBundleTypeEnum", "IfcTypeObject", "IfcTypeProcess", "IfcTypeProduct", "IfcTypeResource", "IfcURIReference", "IfcUShapeProfileDef", "IfcUnit", "IfcUnitAssignment", "IfcUnitEnum", "IfcUnitaryControlElement", "IfcUnitaryControlElementType", "IfcUnitaryControlElementTypeEnum", "IfcUnitaryEquipment", "IfcUnitaryEquipmentType", "IfcUnitaryEquipmentTypeEnum", "IfcValue", "IfcValve", "IfcValveType", "IfcValveTypeEnum", "IfcVaporPermeabilityMeasure", "IfcVector", "IfcVectorOrDirection", "IfcVertex", "IfcVertexLoop", "IfcVertexPoint", "IfcVibrationIsolator", "IfcVibrationIsolatorType", "IfcVibrationIsolatorTypeEnum", "IfcVirtualElement", "IfcVirtualGridIntersection", "IfcVoidingFeature", "IfcVoidingFeatureTypeEnum", "IfcVolumeMeasure", "IfcVolumetricFlowRateMeasure", "IfcWall", "IfcWallElementedCase", "IfcWallStandardCase", "IfcWallType", "IfcWallTypeEnum", "IfcWarpingConstantMeasure", "IfcWarpingMomentMeasure", "IfcWarpingStiffnessSelect", "IfcWasteTerminal", "IfcWasteTerminalType", "IfcWasteTerminalTypeEnum", "IfcWindow", "IfcWindowLiningProperties", "IfcWindowPanelOperationEnum", "IfcWindowPanelPositionEnum", "IfcWindowPanelProperties", "IfcWindowStandardCase", "IfcWindowStyle", "IfcWindowStyleConstructionEnum", "IfcWindowStyleOperationEnum", "IfcWindowType", "IfcWindowTypeEnum", "IfcWindowTypePartitioningEnum", "IfcWorkCalendar", "IfcWorkCalendarTypeEnum", "IfcWorkControl", "IfcWorkPlan", "IfcWorkPlanTypeEnum", "IfcWorkSchedule", "IfcWorkScheduleTypeEnum", "IfcWorkTime", "IfcZShapeProfileDef", "IfcZone" };
     return names[v];
 }
 
diff --git a/src/ifcparse/Ifc4enum.h b/src/ifcparse/Ifc4enum.h
index c677284fe1..7d257e26e8 100644
--- a/src/ifcparse/Ifc4enum.h
+++ b/src/ifcparse/Ifc4enum.h
@@ -42,7 +42,7 @@ namespace Type {
     } Enum;
     IFC_PARSE_API boost::optional<Enum> Parent(Enum v);
     IFC_PARSE_API Enum FromString(const std::string& s);
-    IFC_PARSE_API std::string ToString(Enum v);
+    IFC_PARSE_API const std::string& ToString(Enum v);
     IFC_PARSE_API bool IsSimple(Enum v);
 }
 
diff --git a/src/ifcparse/IfcFile.h b/src/ifcparse/IfcFile.h
index fe927eb9f6..8b2137514a 100644
--- a/src/ifcparse/IfcFile.h
+++ b/src/ifcparse/IfcFile.h
@@ -39,6 +39,28 @@ public:
 	typedef std::map<std::string, IfcSchema::IfcRoot*> entity_by_guid_t;
 	typedef std::map<unsigned int, std::vector<unsigned int> > entities_by_ref_t;
 	typedef entity_by_id_t::const_iterator const_iterator;
+
+	class type_iterator : public entities_by_type_t::const_iterator {
+	public:
+		type_iterator() : entities_by_type_t::const_iterator() {};
+
+		type_iterator(const entities_by_type_t::const_iterator& it)
+			: entities_by_type_t::const_iterator(it)
+		{};
+
+		entities_by_type_t::key_type const * operator->() const {
+			return &entities_by_type_t::const_iterator::operator->()->first;
+		}
+
+		const entities_by_type_t::key_type& operator*() const {
+			return entities_by_type_t::const_iterator::operator*().first;
+		}
+
+		const std::string& as_string() const {
+			return IfcSchema::Type::ToString(**this);
+		}
+	};
+
 private:
 	typedef std::map<IfcUtil::IfcBaseClass*, IfcUtil::IfcBaseClass*> entity_entity_map_t;
 
@@ -46,6 +68,7 @@ private:
 
 	entity_by_id_t byid;
 	entities_by_type_t bytype;
+	entities_by_type_t bytype_excl;
 	entities_by_ref_t byref;
 	entity_by_guid_t byguid;
 	entity_entity_map_t entity_file_map;
@@ -69,7 +92,13 @@ public:
 	/// Returns the last entity in the file, this probably is the entity
 	/// with the highest id (EXPRESS ENTITY_INSTANCE_NAME)
 	const_iterator end() const;
-	
+
+	type_iterator types_begin() const;
+	type_iterator types_end() const;
+
+	type_iterator types_incl_super_begin() const;
+	type_iterator types_incl_super_end() const;
+
 	/// Returns all entities in the file that match the template argument.
 	/// NOTE: This also returns subtypes of the requested type, for example:
 	/// IfcWall will also return IfcWallStandardCase entities
@@ -88,6 +117,9 @@ public:
 	/// IfcWall will also return IfcWallStandardCase entities
 	IfcEntityList::ptr entitiesByType(IfcSchema::Type::Enum t);
 
+	/// Returns all entities in the file that match the positional argument.
+	IfcEntityList::ptr entitiesByTypeExclSubtypes(IfcSchema::Type::Enum t);
+
 	/// Returns all entities in the file that match the positional argument.
 	/// NOTE: This also returns subtypes of the requested type, for example:
 	/// IfcWall will also return IfcWallStandardCase entities
diff --git a/src/ifcparse/IfcParse.cpp b/src/ifcparse/IfcParse.cpp
index 792f07db36..1d46a4ab8f 100644
--- a/src/ifcparse/IfcParse.cpp
+++ b/src/ifcparse/IfcParse.cpp
@@ -1320,6 +1320,16 @@ bool IfcFile::Init(IfcParse::IfcSpfStream* s) {
 			}
 
 			IfcSchema::Type::Enum ty = instance->type();
+
+			{
+				IfcEntityList::ptr instances_by_type = entitiesByTypeExclSubtypes(ty);
+				if (!instances_by_type) {
+					instances_by_type = IfcEntityList::ptr(new IfcEntityList());
+					bytype_excl[ty] = instances_by_type;
+				}
+				instances_by_type->push(instance);
+			}
+
 			for (;;) {
 				IfcEntityList::ptr instances_by_type = entitiesByType(ty);
 				if (!instances_by_type) {
@@ -1334,7 +1344,7 @@ bool IfcFile::Init(IfcParse::IfcSpfStream* s) {
 					break;
 				}
 			}
-			
+
 			if (byid.find(current_id) != byid.end()) {
 				std::stringstream ss;
 				ss << "Overwriting instance with name #" << current_id;
@@ -1567,6 +1577,16 @@ IfcUtil::IfcBaseClass* IfcFile::addEntity(IfcUtil::IfcBaseClass* entity) {
 
 	// The mapping by entity type is updated.
 	IfcSchema::Type::Enum ty = new_entity->type();
+
+	{
+		IfcEntityList::ptr instances_by_type = entitiesByTypeExclSubtypes(ty);
+		if (!instances_by_type) {
+			instances_by_type = IfcEntityList::ptr(new IfcEntityList());
+			bytype_excl[ty] = instances_by_type;
+		}
+		instances_by_type->push(new_entity);
+	}
+
 	for (;;) {
 		IfcEntityList::ptr instances_by_type = entitiesByType(ty);
 		if (!instances_by_type) {
@@ -1582,7 +1602,7 @@ IfcUtil::IfcBaseClass* IfcFile::addEntity(IfcUtil::IfcBaseClass* entity) {
 			break;
 		}
 	}
-	
+
 	int new_id = -1;
 	if (!new_entity->entity->file) {
 		// For newly created entities ensure a valid ENTITY_INSTANCE_NAME is set
@@ -1720,10 +1740,33 @@ void IfcFile::removeEntity(IfcUtil::IfcBaseClass* entity) {
 	}
 	
 	byid.erase(byid.find(id));
-	
-	IfcEntityList::ptr instances_of_same_type = entitiesByType(entity->type());
-	instances_of_same_type->remove(entity);
 
+	IfcSchema::Type::Enum ty = entity->type();
+
+	{
+		IfcEntityList::ptr instances_of_same_type = entitiesByTypeExclSubtypes(ty);
+		instances_of_same_type->remove(entity);
+		if (instances_of_same_type->size() == 0) {
+			bytype_excl.erase(ty);
+		}
+	}
+
+	for (;;) {
+		IfcEntityList::ptr instances_of_same_type = entitiesByType(ty);
+		if (instances_of_same_type) {
+			instances_of_same_type->remove(entity);
+		}
+		if (instances_of_same_type->size() == 0) {
+			bytype.erase(ty);
+		}
+		boost::optional<IfcSchema::Type::Enum> pt = IfcSchema::Type::Parent(ty);
+		if (pt) {
+			ty = *pt;
+		} else {
+			break;
+		}
+	}
+	
 	delete entity->entity;
 	delete entity;
 }
@@ -1733,6 +1776,11 @@ IfcEntityList::ptr IfcFile::entitiesByType(IfcSchema::Type::Enum t) {
 	return (it == bytype.end()) ? IfcEntityList::ptr() : it->second;
 }
 
+IfcEntityList::ptr IfcFile::entitiesByTypeExclSubtypes(IfcSchema::Type::Enum t) {
+	entities_by_type_t::const_iterator it = bytype_excl.find(t);
+	return (it == bytype_excl.end()) ? IfcEntityList::ptr() : it->second;
+}
+
 IfcEntityList::ptr IfcFile::entitiesByType(const std::string& t) {
 	return entitiesByType(IfcSchema::Type::FromString(boost::to_upper_copy(t)));
 }
@@ -1787,6 +1835,22 @@ IfcFile::entity_by_id_t::const_iterator IfcFile::end() const {
 	return byid.end();
 }
 
+IfcFile::type_iterator IfcFile::types_begin() const {
+	return bytype_excl.begin();
+}
+
+IfcFile::type_iterator IfcFile::types_end() const {
+	return bytype_excl.end();
+}
+
+IfcFile::type_iterator IfcFile::types_incl_super_begin() const {
+	return bytype.begin();
+}
+
+IfcFile::type_iterator IfcFile::types_incl_super_end() const {
+	return bytype.end();
+}
+
 std::ostream& operator<< (std::ostream& os, const IfcParse::IfcFile& f) {
 	f.header().write(os);
 
diff --git a/src/ifcwrap/IfcParseWrapper.i b/src/ifcwrap/IfcParseWrapper.i
index 514530c4aa..ec8b3f4722 100644
--- a/src/ifcwrap/IfcParseWrapper.i
+++ b/src/ifcwrap/IfcParseWrapper.i
@@ -42,6 +42,8 @@ private:
 %ignore IfcParse::IfcSpfHeader::stream;
 %ignore IfcParse::HeaderEntity::is;
 
+%ignore IfcParse::IfcFile::type_iterator;
+
 %ignore IfcUtil::IfcBaseClass::is;
 
 %rename("by_id") entityById;
@@ -80,6 +82,22 @@ private:
 		return keys;
 	}
 
+	std::vector<std::string> types() const {
+		const size_t n = std::distance($self->types_begin(), $self->types_end());
+		std::vector<std::string> ts;
+		ts.reserve(n);
+		std::transform($self->types_begin(), $self->types_end(), std::back_inserter(ts), IfcSchema::Type::ToString);
+		return ts;
+	}
+
+	std::vector<std::string> types_with_super() const {
+		const size_t n = std::distance($self->types_incl_super_begin(), $self->types_incl_super_end());
+		std::vector<std::string> ts;
+		ts.reserve(n);
+		std::transform($self->types_incl_super_begin(), $self->types_incl_super_end(), std::back_inserter(ts), IfcSchema::Type::ToString);
+		return ts;
+	}
+
 	%pythoncode %{
 		if _newclass:
 			# Hide the getters with read-only property implementations
diff --git a/test/tests.py b/test/tests.py
index 1a6a85db45..d0d5845e86 100644
--- a/test/tests.py
+++ b/test/tests.py
@@ -59,6 +59,15 @@ app = f.by_type("IfcApplication")[0]
 assert f2.add(app).get_info(False, True) == app.get_info(False, True)
 assert "Version" in dir(app)
 
+# Enumeration of entity type names
+g = ifcopenshell.open()
+p = g.createIfcCartesianPoint((0.,0.))
+assert len(g.types()) == 1
+assert "IfcPoint" in g.types_with_super()
+g.remove(p)
+assert len(g.types()) == 0
+assert len(g.types_with_super()) == 0
+
 # Some operations on ifcopenshell.entity_instance
 assert f[22].Id == ''
 assert f[22].Addresses is None