override-content-types-018 (AB)

The pipeline

<p:declare-step xmlns:err="http://www.w3.org/ns/xproc-error"
                xmlns:p="http://www.w3.org/ns/xproc"
                xmlns:t="http://xproc.org/ns/testsuite/3.0" name="pipeline" version="3.0">
   <p:output port="result"/>
   <p:unarchive override-content-types="[['something', '*/jpeg']]">
      <p:with-input href="../documents/archive.zip"/>
   </p:unarchive>
</p:declare-step>