oid building too many small objects, it is
 recommended to use the predefined constants
 <code>Boolean.TRUE</code> and <code>Boolean.FALSE</code>. The
 tree also <em>must</em> have either null internal nodes or
 internal nodes representing the boundary as specified in the
 <a href="../../../../../../../org/apache/commons/math3/geometry/partitioning/Region.html#getTree(boolean)"><code>getTree</code></a> method).</p></div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../../or