def create_channel(cls, channel_id, name, importance=IMPORTANCE_DEFAULT,
                       description=""):
        """ Before you can deliver the notification on Android 8.0 and higher, 
        you must register your app's notification channel with the system by 
        passing an instance of NotificationChannel 
        to createNotificationChannel().
        
        Parameters
        ----------
        channel_id: String-
            Channel ID
        name: String
            Channel name
        importance: Int
            One of the IMPORTANCE levels
        description: String
            Channel description
            
        Returns
        -------
        channel: NotificationChannel or None
            The channel that was created.
        
        """
        app = AndroidApplication.instance()
        if app.api_level >= 26:
            channel = NotificationChannel(channel_id, name, importance)
            channel.setDescription(description)

            NotificationChannelManager.get().then(
                lambda mgr: mgr.createNotificationChannel(channel))

            return channel
Before you can deliver the notification on Android 8.0 and higher, 
        you must register your app's notification channel with the system by 
        passing an instance of NotificationChannel 
        to createNotificationChannel().
        
        Parameters
        ----------
        channel_id: String-
            Channel ID
        name: String
            Channel name
        importance: Int
            One of the IMPORTANCE levels
        description: String
            Channel description
            
        Returns
        -------
        channel: NotificationChannel or None
            The channel that was created.