pan><span class="special">::</span><span class="identifier">transform_attribute</span></code></a> to convert
            the supplied attribute to the exposed attribute type, as needed. The
            functions <code class="computeroutput"><span class="identifier">post</span></code> and <code class="computeroutput"><span class="identifier">fail</span></code> of this customization point are
            not invoked by this component (as this would not make any sense).
          </li>
<li class="listitem">
  