<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope" xmlns:xml="http://www.w3.org/XML/1998/namespace">
    <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" env:relay="false"
            env:anyAttribute="any value">
            foo
        </test:echoOk>
        <test1:echoOk1 xmlns:test1="http://example1.org/ts-tests"
            env:role="http://www.w3.org/2003/05/soap-envelope/role/next"
            env:mustUnderstand="false" env:relay="true"
            env:anyAttribute="any value">
            foo
        </test1:echoOk1>
        <test2:echoOk2 xmlns:test2="http://example2.org/ts-tests"
            env:role="http://www.w3.org/2003/05/soap-envelope/role/ultimateReceiver"
            env:mustUnderstand="1"
            env:anyAttribute="any value">
            foo
        </test2:echoOk2>
    </env:Header>
    <env:Body>
        <p:echo xmlns:p="urn:echo"/>
    </env:Body>
</env:Envelope>