mpty_body</span></code></a>. Then, a new parser is
        constructed from this existing parser where the body type is conditionally
        determined by information from the header or elsewhere.
      </p>
<p>
        This example illustrates how a server may make the commitment of a body type
        depending on the method verb:
      </p>
<pre class="programlisting"><span class="comment">/** Handle a form POST request, choosing a body type depending on the Content-Type.

    This reads a request from 