ass="table-break"><p>
        The choices for template types must match the message passed on construction.
        This code creates an HTTP response and the corresponding serializer:
      </p>
<pre class="programlisting"><span class="identifier">response</span><span class="special">&lt;</span><span class="identifier">string_body</span><span class="special">&gt;</span> <span class="identifier">res</span><span class="special">;</span>

<span class="identifier">response_serializer</span><span class="special