 class="special">{</span>
            <span class="identifier">sink</span><span class="special">-&gt;</span><span class="identifier">set_filter</span><span class="special">(</span><span class="identifier">logging</span><span class="special">::</span><span class="identifier">parse_filter</span><span class="special">(</span><span class="identifier">param</span><span class="special">.</span><span class="identifier">get</span><span class="special">()));</span>
        <span class="special">}</span>

        <sp