AB choose-060

The pipeline

      <p:declare-step xmlns:p="http://www.w3.org/ns/xproc" name="pipeline" version="3.0">
         <p:output port="result"/>
         
         <p:choose>
            <p:when test="count(collection())=3" collection="true">
               <p:with-input>
                  <doc1 xmlns=""/>
                  <doc2 xmlns=""/>
                  <doc3 xmlns=""/>
               </p:with-input>
               <p:identity>
                  <p:with-input><right xmlns=""/></p:with-input>
               </p:identity>
            </p:when>
            <p:otherwise>
               <p:identity>
                  <p:with-input><wrong xmlns=""/></p:with-input>
               </p:identity>
            </p:otherwise>
         </p:choose>
      </p:declare-step>