View Source ExTDLib.Method.GetInactiveSupergroupChats (ExTDLib v0.0.4)

Returns a list of recently inactive supergroups and channels. Can be used when user reaches limit on the number of joined supergroups and channels and receives CHANNELS_TOO_MUCH error. Also, the limit can be increased with Telegram Premium. Returns object_ptr<Chats>.

More details on telegram's documentation.