p:run-028

The pipeline

<p:declare-step xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
   <p:output port="result"/>
   <p:identity>
      <p:with-input>
         <p:inline>
            <p:declare-step version="3.0">
               <p:input port="source" content-types="xml"/>
               <p:output port="result"/>
               <p:identity/>
            </p:declare-step>
         </p:inline>
      </p:with-input>
   </p:identity>
   <p:run>
      <p:with-input pipe="result"/>
      <p:run-input port="source">
         <p:inline content-type="application/json">[1, 2, 3]</p:inline>
      </p:run-input>
      <p:output port="result"/>
   </p:run>
</p:declare-step>