set Default Notification Channel
Sets the notification channel on Oreo devices or later. Inaccessible pre-Oreo The NotificationChannel should be used for notification settings (vibration, sound, LED, etc) on devices >= Oreo instead of the options in this class, as it allows users more granular control of notification settings.
Return
the same NotificationConfig.
Parameters
notification Channel
the channel to use for Marigold notifications