View Source ExGram.Model.CallbackQuery (ex_gram v0.51.0)
This object represents an incoming callback query from a callback button in an inline keyboard. If the button that originated the query was attached to a message sent by the bot, the field message will be present. If the button was attached to a message sent via the bot (in inline mode), the field inline_message_id will be present. Exactly one of the fields data or game_short_name will be present.
Check the documentation of this model in https://core.telegram.org/bots/api#callbackquery