<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope">
   <env:HeaDER>
       <test:echoOk xmlns:test="http://example.org/ts-tests"
                    env:role="http://www.w3.org/2003/05/soap-envelope/role/ultimateReceiver"
                    env:mustUnderstand=\"true\">
                       foo
       </test:echoOk>
   </env:HeaDER>
   <env:Body><content/></env:Body>
</env:Envelope>
