return tother.txId == this.txId && tother.nodeId.equals(this.nodeId);
return tother.txId == this.txId && tother.nodeId == this.nodeId;
   public boolean equals(Object other)   {      if (other == this)      {         return true;      }            if (!(other instanceof TransactionId))      {         return false;      }            TransactionId tother = (TransactionId)other;            return tother.txId == this.txId && tother.nodeId.equals(this.nodeId);   }