 class="keywordtype">void</span>);</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;</div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;  <span class="keywordtype">void</span> unprotected_subscribe(<span class="keyword">const</span> std::string&amp; channel, <span class="keyword">const</span> subscribe_callback_t&amp; callb