cial">&lt;</span> <span class="identifier">ChannelDescriptorT</span><span class="special">,</span> <span class="identifier">ActorT</span> <span class="special">&gt;</span> <span class="keyword">const</span> <span class="special">&amp;</span> channel_keyword<span class="special">,</span> 
                          <span class="identifier">attribute_name</span> <span class="keyword">const</span> <span class="special">&amp;</span> severity_name<span class="special">,</span> 
                          <span cla