modules/integration/test-resources/SOAP12Testing/RequestMessages/SOAP12ReqT31.xml

<?xml version='1.0' ?>
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope"> 
  <env:Body>
    <test:returnVoid xmlns:test="http://example.org/ts-tests">
    </test:returnVoid>
  </env:Body>
</env:Envelope>