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

Sets the text shown in the chat with a bot if the chat is empty. Can be called only if userTypeBot.can_be_edited == true. Returns object_ptr<Ok>.

NameTypeDescription
bot_user_idstringIdentifier of the target bot.
language_codestringA two-letter ISO 639-1 language code. If empty, the description will be shown to all users for whose languages there is no dedicated description.
descriptionstringNew bot's description on the specified language.

More details on telegram's documentation.