public interface Payload
extends java.io.Serializable
Example:
 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        Document doc =
          dbf.newDocumentBuilder().parse(new InputSource(new StringReader(payloadXML)));
        // Prepare the payload for inclusion in the Message object
        Map<String, Element> msgParts = new HashMap<String, Element>();
        msgParts.put("msgPart", doc.getDocumentElement());
        Payload<Element> payload = PayloadFactory.createXMLPayload(msgParts);