<p>In <a href="https://github.com/mlpack/mlpack/pull/708#discussion_r71805055">src/mlpack/core/tree/vantage_point_tree/typedef.hpp</a>:</p>
<pre style='color:#555'>&gt; @@ -0,0 +1,26 @@
&gt; +/**
&gt; + * @file typedef.hpp
&gt; + *
&gt; + * Template typedefs for the VantagePointTree class that satisfy the
&gt; + * requirements of the TreeType policy class.
&gt; + */
&gt; +#ifndef MLPACK_CORE_TREE_VANTAGE_POINT_TREE_TYPEDEF_HPP
&gt; +#define MLPACK_CORE_TREE_VANTAGE_POINT_TREE_TYPEDEF_HPP
&gt; +
&gt; +// In case it hasn&#39;t been included yet.
&gt; +#include &quot;../vantage_point_tree.hpp&quot;
&gt; +
&gt; +namespace mlpack {
&gt; +namespace tree {
&gt; +  
</pre>
<p>We should add a quick comment here on what the tree is, so that users will find it in the documentation: <a href="http://mlpack.org/docs/mlpack-git/doxygen.php?doc=namespacemlpack_1_1tree.html#typedef-members">http://mlpack.org/docs/mlpack-git/doxygen.php?doc=namespacemlpack_1_1tree.html#typedef-members</a> (I wish that page was less ugly but doxygen is not the best).</p>

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