public static void PassOnMsg(object sender, MemberChangedEventArgs arg)
 {
     if (UndoRedoManager.MemberChanged != null)
     {
         UndoRedoManager.MemberChanged(sender, arg);
     }
 }
 public static void PassOnMsg(object sender, MemberChangedEventArgs arg) {
     if (UndoRedoManager.MemberChanged != null) {
         UndoRedoManager.MemberChanged(sender, arg);
     }
 }