ch need precise control over the
        chunk boundaries, extensions, and trailers may use a set of helper classes
        which enable manual emission of message payloads using chunk encoding.
      </p>
<p>
        To use these helper classes, first serialize the header portion of the message
        using the standard interface. Then prepare the buffers, chunk extensions,
        and desired trailers, and use them with these helpers:
      </p>
<div class="table">
<a name="beast.using_http.chunked_encod