ss="special">&amp;</span> severity_placeholder<span class="special">,</span> 
                          <span class="identifier">SeverityCompareT</span> <span class="keyword">const</span> <span class="special">&amp;</span> severity_compare<span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ChannelT<span class="special">,</span> <span class="keyword">typename</span> SeverityT<span class="speci