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<h4>getRadius</h4>
<pre>public&nbsp;double&nbsp;getRadius()</pre>
<div class="block">Returns the radius of the node's ball.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Radius of node's ball.</dd></dl>
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<pre>public&nbsp;int&nbsp;numInstances()</pre>
<div class="block">R