ss="identifier">less</span><span class="special">&lt;</span><span class="identifier">Key</span><span class="special">&gt;</span> <span class="special">&gt;</span> 
      <span class="keyword">class</span> <a class="link" href="../boost/property_tree/basic_ptree.html" title="Class template basic_ptree">basic_ptree</a><span class="special">;</span>

    <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> <span class="ke