Namespace Xbim.Ifc2x3.SharedComponentElements Classes IfcChamferEdgeFeature IfcDiscreteAccessory IfcDiscreteAccessoryType IfcEdgeFeature IfcElementComponent IfcElementComponentType IfcFastener IfcFastenerType IfcMechanicalFastener IfcMechanicalFastenerType IfcRoundedEdgeFeature