ecial">&amp;</span><span class="special">,</span> <span class="identifier">connect_position</span> <span class="special">=</span> <span class="identifier">at_back</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="connection.html" title="Class connection">connection</a> <a class="link" href="signal.html#id-1_3_37_6_9_3_1_2_24_1_2-bb"><span class="identifier">connect</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">gro