@Override
	public EClass getIfcMaterialUsageDefinition() {
		if (ifcMaterialUsageDefinitionEClass == null) {
			ifcMaterialUsageDefinitionEClass = (EClass) EPackage.Registry.INSTANCE.getEPackage(Ifc4Package.eNS_URI)
					.getEClassifiers().get(374);
		}
		return ifcMaterialUsageDefinitionEClass;
	}
@ Override public EClass getIfcMaterialUsageDefinition ( ) { if ( ifcMaterialUsageDefinitionEClass == null ) { ifcMaterialUsageDefinitionEClass = ( EClass ) EPackage . Registry . INSTANCE . getEPackage ( Ifc4Package . eNS_URI ) . getEClassifiers ( ) . get ( 374 ) ; } return ifcMaterialUsageDefinitionEClass ; }
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@generated