Event fired whenever the notification has been closed.
This event is fired regardless of how the notification was closed - i.e.: via a call to clear/clearAll, the
notification expiring, or by a user clicking either the notification itself, the notification's close button, or
a button on the notification.
Event fired whenever the notification has been closed.
This event is fired regardless of how the notification was closed - i.e.: via a call to
clear/clearAll, the notification expiring, or by a user clicking either the notification itself, the notification's close button, or a button on the notification."notification-closed"