0209-bb"><span class="identifier">channel</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="basic_channel_logger.html#idm30216-bb"><span class="identifier">channel</span></a><span class="special">(</span><span class="identifier">channel_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special