ss="identifier">m_default_outstream</span><span class="special">;</span>

    <span class="comment">/// &lt;summary&gt; The TCE is used to signal the availability of the message body. &lt;/summary&gt;</span>
    <span class="identifier">pplx</span><span class="special">::</span><span class="identifier">task_completion_event</span><span class="special">&lt;</span><span class="identifier">utility</span><span class="special">::</span><span class="identifier">size64_t</span><span class="special">&gt;</span> <sp