s="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span><span class="special">...</span> ArgsT<span class="special">&gt;</span> <span class="keyword">explicit</span> <a name="idm46093048960688-bb"></a><span class="identifier">channel_logger</span><span class="special">(</span><span class="identifier">ArgsT</span><span class="special">...</span> <span class="keyword">const</span> <span class="special">&amp;</span> args<span class="special">