code: public EClass getIfcArbitraryOpenProfileDef() {
  		if (ifcArbitraryOpenProfileDefEClass == null) {
  			ifcArbitraryOpenProfileDefEClass = (EClass) EPackage.Registry.INSTANCE.getEPackage(Ifc2x3tc1Package.eNS_URI)
  					.getEClassifiers().get(29);
  		}
  		return ifcArbitraryOpenProfileDefEClass;
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated