public void Cancel(bool cancelByUser)
 {
     mOperation.Cancel(cancelByUser);
     if (mArchive != null)
     {
         mArchive.CancelOperation(cancelByUser);
     }
 }
 public void Cancel(bool cancelByUser)
 {
     mOperation.Cancel(cancelByUser);
 }
 public void Cancel()
 {
     mOperation.Cancel(false);
 }