InMessage res = invokeService(msg, HttpTransport.HTTP_BINDING);
Attachments atts = res.getAttachments();
Iterator parts = atts.getParts();
assertTrue(parts.hasNext());
Attachment att = (Attachment) parts.next();
Document response = (Document) res.getProperty(RESPONSE);
addNamespace("m", "http://xfire.codehaus.org/mtom");
addNamespace("xop", "http://www.w3.org/2004/08/xop/include");
assertValid("//s:Body/m:GetPictureResponse/m:image/xop:Include", response);