//Visualization vis = item.getVisualization();
//vis.getFocusGroup(Visualization.FOCUS_ITEMS).clear();
}
public void itemClicked(final VisualItem item, MouseEvent e) {
final Visualization vis = item.getVisualization();
if (SwingUtilities.isRightMouseButton(e)) {
if (e.getClickCount() == 1) {
Object uo = item.getSourceTuple().get(Constants.USER_OBJECT);
if (!(uo instanceof GraphNode))
return;