UnicastRemoteCall(UnicastConnection conn, ObjID objid, int opnum, long hash) throws RemoteException
UnicastRemoteCall(UnicastConnection conn)
  UnicastRemoteCall(UnicastConnection conn, ObjID objid, int opnum, long hash)    throws RemoteException  {    this.conn = conn;    this.opnum = opnum;    this.hash = hash;    this.objid = objid;  }