*/
public void setPayloadXML(Object payload) throws OMException, ScriptException {
OMElement firstChild = mc.getEnvelope().getBody().getFirstElement();
firstChild.insertSiblingAfter(xmlHelper.toOMElement(payload));
firstChild.detach();
}
/**
* Get the XML representation of the complete SOAP envelope
* @return return an object that represents the payload in the current scripting language