    and <a class="link" href="ref/boost__beast__test__error.html" title="test::error"><code class="computeroutput"><span class="identifier">test</span><span class="special">::</span><span class="identifier">stream</span></code></a>
          utilities for writing unit tests.
        </li>
<li class="listitem">
          New <a class="link" href="ref/boost__beast__http__is_mutable_body_writer.html" title="http::is_mutable_body_writer"><code class="computeroutput"><span class="identifier">http</span><span cla