The user was banned (and hence is not a member of the chat). Implies the user can't return to the chat or view messages.
bannedUntilDate Point in time (Unix timestamp) when the user will be unbanned; 0 if never. If the user is banned for more than 366 days or for less than 30 seconds from the current time, the user is considered to be banned forever
ChatMemberStatusBanned.fromJson(Map<String, dynamic> json)
Parse from a json