m, 
   the node is set to cull and it would not be displayed.<p/>
   <p>The method also updates the bounding volumes to make the more accurate culling system possible.<br/>
   First the bounding sphere is updated, and if intersecting, 
   the bounding box is updated to perform the more precise culling.</p>
   <p><b>[MANDATORY] The update method must be called first!</b></p>
      <span class="label">Parameters</span>
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