final SOAPMessage soapMessage = getSoapMessage();
final SOAPBody soapBody = soapMessage.getSOAPBody();
final SOAPElement elemCodeElement =
soapBody.addChildElement("getAvailableRooms", NAMESPACE_PREFIX);
elemCodeElement.addChildElement("SID", "rooms").addTextNode(sid);
soapMessage.saveChanges();
final SOAPBody soapResponseBody = getSOAPResponseBody(soapMessage, getJabberServiceUrl());
final Node getFirstRoomResult = soapResponseBody.getFirstChild().getFirstChild();
if (getFirstRoomResult == null)
return null;