 <code class="computeroutput"><span class="identifier">shared_ptr</span></code>. Beast does not
                    use <code class="computeroutput"><span class="identifier">shared_ptr</span></code>
                    anywhere in its public interface. A <code class="computeroutput"><span class="identifier">beast</span><span class="special">::</span><span class="identifier">websocket</span><span class="special">::</span><span class="identifier">stream</span></code>
                    is constructible and m