ResponseFormType responseForm = wps.createResponseForm(respDoc, rawOutput);
responseForm.setResponseDocument(respDoc);
execRequest.setResponseForm(responseForm);
execRequest.performPostOutput(System.out);
DescribeProcessResponse descResponse = wps.issueRequest(descRequest);
// based on the describeprocess, setup the execute
ProcessDescriptionsType processDesc = descResponse.getProcessDesc();