enum IFCDoorStyleOperation { Single_Swing_Left, Single_Swing_Right, Double_Door_Single_Swing, Double_Door_Single_Swing_Opposite_Left, Double_Door_Single_Swing_Opposite_Right, Double_Swing_Left, Double_Swing_Right, Double_Door_Double_Swing, Sliding_To_Left, Sliding_To_Right, Double_Door_Sliding, Folding_To_Left, Folding_To_Right, Double_Door_Folding, Revolving, RollingUp, UserDefined, NotDefined };