NSNotificationSuspensionBehaviorDeliverImmediately

The server delivers notifications matching this registration irrespective of whether suspended with an argument of YES has been called. When a notification with this suspension behavior is matched, it has the effect of first flushing any queued notifications. The effect is as if suspended with an argument of NO were first called if the application is suspended, followed by the notification in question being delivered, followed by a transition back to the previous suspended or unsuspended state.