amp;</span> header<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">KeyType</span> <span class="special">&amp;</span> lower_key<span class="special">,</span> 
                <span class="keyword">const</span> <span class="identifier">KeyType</span> <span class="special">&amp;</span> upper_key<span class="special">,</span> <span class="identifier">KeyNodePtrCompare</span> comp<span class="special">,</span> 
                <span class="keyword">bool</span> left_close