ked_observer.html#idp40061504-bb"><span class="identifier">checked_observer</span></a><span class="special">(</span><span class="identifier">observer_type</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">checker_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="checked_observer.html#idp40056880-bb">public member functions</a></span>
  <span class="keyword