Namespace Xbim.Ifc4.ProductExtension Classes IfcAlignment IfcAnnotation IfcBuilding IfcBuildingElement IfcBuildingElementType IfcBuildingStorey IfcCivilElement IfcCivilElementType IfcDistributionElement IfcDistributionElementType IfcElement IfcElementAssembly IfcElementAssemblyType IfcElementQuantity IfcElementType IfcExternalSpatialElement IfcExternalSpatialStructureElement IfcFeatureElement IfcFeatureElementAddition IfcFeatureElementSubtraction IfcFurnishingElement IfcFurnishingElementType IfcGeographicElement IfcGeographicElementType IfcGrid IfcLinearPositioningElement IfcOpeningElement IfcOpeningStandardCase IfcPort IfcPositioningElement IfcProjectionElement IfcReferent IfcRelAssociatesMaterial IfcRelConnectsElements IfcRelConnectsPorts IfcRelConnectsPortToElement IfcRelConnectsWithRealizingElements IfcRelContainedInSpatialStructure IfcRelFillsElement IfcRelInterferesElements IfcRelProjectsElement IfcRelReferencedInSpatialStructure IfcRelServicesBuildings IfcRelSpaceBoundary IfcRelSpaceBoundary1stLevel IfcRelSpaceBoundary2ndLevel IfcRelVoidsElement IfcSite IfcSpace IfcSpaceType IfcSpatialElement IfcSpatialElementType IfcSpatialStructureElement IfcSpatialStructureElementType IfcSpatialZone IfcSpatialZoneType IfcSystem IfcTransportElement IfcTransportElementType IfcVirtualElement IfcZone Interfaces IfcSpaceBoundarySelect Enums IfcBuildingElement.IfcBuildingElementClause IfcElementAssembly.IfcElementAssemblyClause IfcElementAssemblyType.IfcElementAssemblyTypeClause IfcElementQuantity.IfcElementQuantityClause IfcFeatureElementSubtraction.IfcFeatureElementSubtractionClause IfcGeographicElement.IfcGeographicElementClause IfcGeographicElementType.IfcGeographicElementTypeClause IfcGrid.IfcGridClause IfcRelAssociatesMaterial.IfcRelAssociatesMaterialClause IfcRelConnectsElements.IfcRelConnectsElementsClause IfcRelConnectsPorts.IfcRelConnectsPortsClause IfcRelContainedInSpatialStructure.IfcRelContainedInSpatialStructureClause IfcRelInterferesElements.IfcRelInterferesElementsClause IfcRelReferencedInSpatialStructure.IfcRelReferencedInSpatialStructureClause IfcRelSpaceBoundary.IfcRelSpaceBoundaryClause IfcSpace.IfcSpaceClause IfcSpaceType.IfcSpaceTypeClause IfcSpatialStructureElement.IfcSpatialStructureElementClause IfcSpatialZone.IfcSpatialZoneClause IfcSpatialZoneType.IfcSpatialZoneTypeClause IfcTransportElement.IfcTransportElementClause IfcTransportElementType.IfcTransportElementTypeClause IfcZone.IfcZoneClause