Method: Retrieve a prefix for options related to the notification This overrides the LLMS_Abstract_Options_Data method

Method: Determine if a given notification type is supported

Method: Retrieve get an array of subscriber options for the current notification by type

Method: Reset the subscriptions array

Method: Get an array of saved subscriber settings prefilled with defaults for the current notification

Method: Get an array of prebuilt subscriber option settings for common subscriptions

Method: Get a subscriptions array for a specific subscriber

Method: Takes a subscriber type (student, author, etc) and retrieves a User ID