span class="special">;</span>
  <span class="keyword">virtual</span> <span class="identifier">intrusive_ptr</span><span class="special">&lt;</span> <a class="link" href="../../attribute_value/impl.html" title="Struct impl">attribute_value::impl</a> <span class="special">&gt;</span> <a class="link" href="impl.html#idm46093048326064-bb"><span class="identifier">detach_from_thread</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">virtua