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

Returns approximate number of chats similar to the given chat. Returns object_ptr<Count>.

NameTypeDescription
chat_idstringIdentifier of the target chat; must be an identifier of a channel chat.
return_localboolPass true to get the number of chats without sending network requests, or -1 if the number of chats is unknown locally.

More details on telegram's documentation.