message getOfferSetResponse
parts 
getOfferSetResponseDoc
element dto:getOfferSetResponse
used by 
Operation getOfferSet in PortType WorkItemManagementService
source  
<wsdl:message name="getOfferSetResponse">
  <wsdl:part name="getOfferSetResponseDoc" element="dto:getOfferSetResponse"/>
</wsdl:message>

WSDL documentation generated by XMLSpy WSDL Editor http://www.altova.com/xmlspy