ss="comment">// Wrap it into the frontend and register in the core</span>
    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span><span class="special">&lt;</span> <span class="identifier">sink_t</span> <span class="special">&gt;</span> <span class="identifier">sink</span><span class="special">(</span><span class="keyword">new</span> <span class="identifier">sink_t</span><span class="special">(</span><span class="identifier">backend</span><span class