WS SOAP Response with WS-A Headers results in ClassCastException in DV

Issue

• I deployed a vdb which consumes a SOAP ws. The request XML message contains headers so I set the WS translator property "Default Service Mode" to MESSAGE but when querying the vdb gives the error :

Error: javax.xml.transform.dom.DOMSource cannot be cast to javax.xml.transform.stax.StAXSource