><span class="keyword">void</span> <a name="id-1_3_37_6_9_3_1_2_24_3_1-bb"></a><span class="identifier">disconnect</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">group_type</span><span class="special">&amp;</span> group<span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> S<span class="special">&gt;</span> <span class="keyword">void</span> <a nam