public int updateResponse( MessageAddress t, XMLMessage response) {  if (!(response.equals(this.response))) { this.response = response; return Relay.RESPONSE_CHANGE; } return Relay.NO_CHANGE;
public int updateResponse(MessageAddress addr, Object o) { if (!(o instanceof XMLMessage)) throw new RuntimeException("AggRelay: Response is not an XMLMessage"); return updateResponse(addr, (XMLMessage)o);
  public int updateResponse(      MessageAddress t, XMLMessage response) {    // assert response != null    if (!(response.equals(this.response))) {      this.response = response;      return Relay.RESPONSE_CHANGE;    }    return Relay.NO_CHANGE;  }