span class="special">{</span>
    <span class="comment">// types</span>
    <span class="keyword">typedef</span> <a class="link" href="adaptive_pool.html" title="Class template adaptive_pool">adaptive_pool</a><span class="special">&lt;</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager</span><span class="special">,</span> <span class="identifier">NodesPerBlock</span><span class="special">,</span> <span class="identifier">MaxFreeBlocks</span><span 