public function clear_notification( $queue_id, Notification $notification ) {

		$notifications = $this->get_notifications( $queue_id );

		$notification = array_search( $notification, $notifications );

		if ( false === $notification ) {
			return false;
		}

		unset( $notifications[ $notification ] );

		return $this->store_notifications( $queue_id, $notifications );
	}