Toggles whether joining is mandatory to send messages to a discussion supergroup; requires can_restrict_members administrator right. Request type for Tdjson#toggleSupergroupJoinToSendMessages.
Optional
New value of join_to_send_messages.
Identifier of the supergroup that isn't a broadcast group.
Toggles whether joining is mandatory to send messages to a discussion supergroup; requires can_restrict_members administrator right. Request type for Tdjson#toggleSupergroupJoinToSendMessages.