al HTTP header fields container.
      </p>
<h5>
<a name="beast.ref.boost__beast__http__fields.h0"></a>
        <span class="phrase"><a name="beast.ref.boost__beast__http__fields.synopsis"></a></span><a class="link" href="boost__beast__http__fields.html#beast.ref.boost__beast__http__fields.synopsis">Synopsis</a>
      </h5>
<p>
        Defined in header <code class="literal">&lt;<a href="../../../../../../boost/beast/http/fields.hpp" target="_top">boost/beast/http/fields.hpp</a>&gt;</code>
      </p>
<pre c