8"></a><span class="lineno">  168</span><span class="comment">   * Equivalent to `async_end_sending(F)` wherein `F()` does nothing.</span></div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span><span class="comment">   *</span></div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span><span class="comment">   * All notes from sync_io::Native_handle_sender apply.</span></div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lin