public boolean cancel(boolean ign) {
    assert op != null : "No operation";
    op.cancel();
    notifyListeners();
    return op.getState() == OperationState.WRITE_QUEUED;
  }
public boolean cancel ( boolean ign ) { assert op != null : "No operation" ; op . cancel ( ) ; notifyListeners ( ) ; return op . getState ( ) == OperationState . WRITE_QUEUED ; }
Cancel this operation, if possible.

@param ign not used
@deprecated
@return true if the operation has not yet been written to the network