page.setNonBlockingOpacity(opacity);
page.waitUntilThereIsNoNotify();
page.showNotification();
final NotifyMessage message = page.getNotify().getItem(0);
actions.moveToElement(message.advanced().getSummaryElement()).perform();
Graphene.waitAjax().withMessage("The notify should has opacity " + opacity + ".")
.pollingEvery(50, TimeUnit.MILLISECONDS).until(new Predicate<WebDriver>() {
@Override
public boolean apply(WebDriver input) {