//we have this unwrapped earlier. get the info holder
//and then look at the parameters
Parameter detailsParameter =
outputMessage.getParameter(Constants.UNWRAPPED_DETAILS);
MessagePartInformationHolder infoHolder =
(MessagePartInformationHolder) detailsParameter.getValue();
List partsList = infoHolder.getPartsList();
//populate the parts list - this list is needed to generate multiple
//parameters in the signatures
// in out put params we only intersted if there is only one parameter
// otherwise we can not unwrap it.