Associate a group to a channel as discussion group for that channel
boolFalse#bc799737 = Bool;
boolTrue#997275b5 = Bool;
channels.setDiscussionGroup#40582bb2 broadcast:InputChannel group:InputChannel = Bool;
||Broadcast ID invalid.
||The provided channel is invalid.
||You must be an admin in this chat to do this.
||Discussion link not modified.
||Invalid supergroup ID.
||Group with hidden history for new members can't be set as discussion groups.
Groups can be associated to a channel as a discussion group, to allow users to discuss about posts.