xpathSelector.setNamespaceURIs(MessageConstants.get_nsMap());
List<Node> bodyNodes = xpathSelector.selectNodes(message);
/* Select all elements inside the task output payload. */
xpathSelector = DocumentHelper.createXPath("/soapenv:Envelope/soapenv:Body/*[1]/ib4p:taskOutput//*");
xpathSelector.setNamespaceURIs(MessageConstants.get_nsMap());
List<Node> taskOutputNodes = xpathSelector.selectNodes(message);
/* Select all the attachments. */
xpathSelector = DocumentHelper.createXPath("/soapenv:Envelope/soapenv:Body//ib4p:attachments//*");
xpathSelector.setNamespaceURIs(MessageConstants.get_nsMap());
List<Node> attachementsNode = xpathSelector.selectNodes(message);