The pipeline
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" name="pipeline" version="3.0">
<p:input port="source"/>
<p:output port="result"/>
<p:identity name="identity">
<p:with-input port="source">
<p:pipe step="pipeline" port="source"/>
<p:pipe step="pipeline" port="source"/>
<p:pipe step="pipeline" port="source"/>
<p:pipe step="pipeline" port="source"/>
<p:pipe step="pipeline" port="source"/>
<p:pipe step="pipeline" port="source"/>
</p:with-input>
</p:identity>
<p:split-sequence name="splitseq" test="position() <= 2"/>
<p:count name="count"/>
</p:declare-step>
Schematron validation
<s:schema xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
<s:ns uri="http://www.w3.org/ns/xproc-step" prefix="c"/>
<s:pattern>
<s:rule context="/">
<s:assert test="c:result">Root element is not 'c:result'.</s:assert>
<s:assert test="c:result/text()=2">Value of c:result is not 2.</s:assert>
</s:rule>
</s:pattern>
</s:schema>
