code: public boolean moveTo(N newParent, OctTreeZone zone) {
  		if (zone != null) {
  			return moveTo(newParent, zone.ordinal());
  		}
  		return false;
  	}
docs: Move this node in the given new node.
  
  <p>This function is preferred to a sequence of calls
  to {@link #removeFromParent()} and {@link #setChildAt(int, OctTreeNode)}
  because it fires a limited set of events dedicated to the move
  the node.
  
  @param newParent is the new parent for this node.
  @param zone is the position of this node in the new parent.
  @return <code>true</code> on success, otherwise <code>false</code>.