href="channel_visitor.html#boost.log.expressions.channel_severi_idp36944880.channel_visitorconstruct-copy-destruct">construct/copy/destruct</a></span>
  <a class="link" href="channel_visitor.html#idp36955872-bb"><span class="identifier">channel_visitor</span></a><span class="special">(</span><span class="identifier">channel_severity_filter_terminal</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">ArgT</span><span class="speci