p;java.lang.String&nbsp;graph()
                       throws java.lang.Exception</pre>
<div class="block">Returns graph describing the tree.</div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.Exception</code> - if something goes wrong</dd></dl>
</li>
</ul>
<a name="cleanup()">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>cleanup</h4>
<pre>public&nbsp;void&nbsp;cleanup()</pre>
<div class="block">Cleanup in order to save memory.</div>
<dl>
<dt><strong>Overrides:</