toJson method
Implementation
@override
Map<String, dynamic> toJson([dynamic extra]) {
return {
"@type": CONSTRUCTOR,
"chat_id": chatId,
"invite_link": inviteLink,
"name": name,
"expiration_date": expirationDate,
"member_limit": memberLimit,
"creates_join_request": createsJoinRequest,
"@extra": extra,
};
}