<p:declare-step xmlns:p="http://www.w3.org/ns/xproc"
		name="xinclude-and-validate"
		version="1.0">
  <p:input port="source" primary="true"/>
  <p:input port="schemas" sequence="true"/>
  <p:output port="result">
    <p:pipe step="validated" port="result"/>
  </p:output>

  <p:xinclude name="included">
    <p:input port="source">
      <p:pipe step="xinclude-and-validate" port="source"/>
    </p:input>
  </p:xinclude>

  <p:validate-with-xml-schema name="validated">
    <p:input port="source">
      <p:pipe step="included" port="result"/>
    </p:input>
    <p:input port="schema">
      <p:pipe step="xinclude-and-validate" port="schemas"/>
    </p:input>
  </p:validate-with-xml-schema>
</p:declare-step>