struct</a></span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> 
    <span class="keyword">explicit</span> <a class="link" href="basic_event_log_backend.html#idm32590-bb"><span class="identifier">basic_event_log_backend</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span> <span cla