*/
private void respondError(AdHocCommandData response, XMPPError.Condition condition,
AdHocCommand.SpecificErrorCondition specificCondition)
{
XMPPError error = new XMPPError(condition);
error.addExtension(new AdHocCommandData.SpecificError(specificCondition));
respondError(response, error);
}
/**
* Responds an error with an specific error.