this.add(new Label("displayName", selectedNode.getDisplayName()));
final ActionLinksPanel links = new ActionLinksPanel("actionLinks", new Model(), pageRef);
links.setOutputMarkupId(true);
this.add(links);
links.addWithRoles(new ActionLink() {
private static final long serialVersionUID = -3722207913631435501L;
@Override
public void onClick(final AjaxRequestTarget target) {