code: @Override
  	public EClass getIfcRelContainedInSpatialStructure() {
  		if (ifcRelContainedInSpatialStructureEClass == null) {
  			ifcRelContainedInSpatialStructureEClass = (EClass) EPackage.Registry.INSTANCE
  					.getEPackage(Ifc4Package.eNS_URI).getEClassifiers().get(542);
  		}
  		return ifcRelContainedInSpatialStructureEClass;
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated