code: public EEnum getIfcNullStyleEnum() {
  		if (ifcNullStyleEnumEEnum == null) {
  			ifcNullStyleEnumEEnum = (EEnum) EPackage.Registry.INSTANCE.getEPackage(Ifc2x3tc1Package.eNS_URI)
  					.getEClassifiers().get(860);
  		}
  		return ifcNullStyleEnumEEnum;
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated