</span><span class="identifier">get_next_chunk_body</span><span class="special">(),</span>
    <span class="string">";mp3"</span>
    <span class="string">";title=\"Danny Boy\""</span>
    <span class="string">";artist=\"Fred E. Weatherly\""</span>
    <span class="special">));</span>
</pre>
<p>
        The next code sample emits a chunked response which promises two trailer
        fields and delivers them in the last chunk. The implementation allocates
        memory using the default or a passed-in alloc