l">(</span><a class="link" href="../asynchronous_sink.html" title="Class template asynchronous_sink">asynchronous_sink</a> <span class="special">*</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="run_func.html#idm31717-bb">public member functions</a></span>
  <span class="identifier">result_type</span> <a class="link" href="run_func.html#idm31718-bb"><span class="keyword">operator</span><span class="spe