code: @Override
  	public EEnum getIfcPreferredSurfaceCurveRepresentation() {
  		if (ifcPreferredSurfaceCurveRepresentationEEnum == null) {
  			ifcPreferredSurfaceCurveRepresentationEEnum = (EEnum) EPackage.Registry.INSTANCE
  					.getEPackage(Ifc4Package.eNS_URI).getEClassifiers().get(1035);
  		}
  		return ifcPreferredSurfaceCurveRepresentationEEnum;
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated