@Override
public void actionPerformed(ActionEvent e) {
ArrayList<SceneGraphObject> sgos = new ArrayList<SceneGraphObject>();
GraphObjectReference gn = (GraphObjectReference) getNode()
.getGraphObject();
Universe u = Universe.getGraphPath(gn.getNode(), gn.getObject(),
sgos);
if(u!=null){
getNode().getTree().expand(sgos, u);
}
else{