public void onEvent(final IEvent<?> event) {
super.onEvent(event);
if (event.getPayload() instanceof TreeNodeUpdateEvent) {
final TreeNodeUpdateEvent update = (TreeNodeUpdateEvent) event.getPayload();
updateTree();
update.getTarget().add(treeContainer);
send(getPage(), Broadcast.BREADTH,
new RoleSummaryUpdateEvent(update.getTarget(), update.getSelectedNodeId()));
}
}