<?xml version="1.0"?>

<sx:resources xmlns:sx="http://www.servingxml.com/core">

  <sx:service id="myChoice">
    <sx:serialize>
      <sx:transform>
        <sx:choose>
          <sx:when test="1">
            <sx:transform>
              <sx:document><xxx/></sx:document>
            </sx:transform>
          </sx:when>
        </sx:choose>
      </sx:transform>
    </sx:serialize>
  </sx:service>

</sx:resources>

