public EClass getIfcDocumentReference() {
		if (ifcDocumentReferenceEClass == null) {
			ifcDocumentReferenceEClass = (EClass) EPackage.Registry.INSTANCE.getEPackage(Ifc2x3tc1Package.eNS_URI)
					.getEClassifiers().get(169);
		}
		return ifcDocumentReferenceEClass;
	}
public EClass getIfcDocumentReference ( ) { if ( ifcDocumentReferenceEClass == null ) { ifcDocumentReferenceEClass = ( EClass ) EPackage . Registry . INSTANCE . getEPackage ( Ifc2x3tc1Package . eNS_URI ) . getEClassifiers ( ) . get ( 169 ) ; } return ifcDocumentReferenceEClass ; }
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@generated