">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <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 class="link" href="basic_event_log_backend.html#idm32602-bb"><span class="identifier">basic_event_log_backend</span></a><span class="special">(</span><span class="identifier">