ass="identifier">node_ptr</span> <span class="special">&amp;</span> header<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">KeyType</span> <span class="special">&amp;</span> key<span class="special">,</span> 
                      <span class="identifier">KeyNodePtrCompare</span> comp<span class="special">,</span> 
                      <span class="identifier">insert_commit_data</span> <span class="special">&amp;</span> commit_data<span class="special">)</span><span