120         val nm: NotificationManagerCompat = NotificationManagerCompat.from(context)  in createChannel()  constant
121         nm.createNotificationChannel(channel)  in createChannel()
124     private fun deleteChannel(nm: NotificationManagerCompat, channelId: String) {  in deleteChannel()
125         val channel: NotificationChannel? = nm.getNotificationChannel(channelId)  in deleteChannel()
127             nm.deleteNotificationChannel(channelId)  in deleteChannel()
131     private fun getAllExistingChannelIds(nm: NotificationManagerCompat): Set<String> {  in getAllExistingChannelIds()
133         for (channel in nm.getNotificationChannels()) {  in getAllExistingChannelIds()
145         val nm: NotificationManagerCompat = NotificationManagerCompat.from(context)  in updateNotificationChannels()  constant
148         deleteChannel(nm, "alarmLowPriorityNotification")  in updateNotificationChannels()
149         deleteChannel(nm, "alarmHighPriorityNotification")  in updateNotificationChannels()
150         deleteChannel(nm, "StopwatchNotification")  in updateNotificationChannels()
151         deleteChannel(nm, "alarmNotification")  in updateNotificationChannels()
152         deleteChannel(nm, "TimerModelNotification")  in updateNotificationChannels()
153         deleteChannel(nm, "alarmSnoozeNotification")  in updateNotificationChannels()
157         val existingChannelIds = getAllExistingChannelIds(nm)  in updateNotificationChannels()