Values.GuestUserHistoryCountSourceContains the count of guest users for a specific billing period, used for tracking historical guest user activity.
type nonrec t = {month : GenericString.t option;The month and billing period in YYYY_MM format (e.g., '2024_01').
*)count : GenericString.t option;The number of guest users who have communicated with your Wickr network during this billing period.
*)}