If True, an alert will be shown by the client instead of a notification at the top of the chat screen. Defaults to false.
Text of the notification. If not specified, nothing will be shown to the user, 0-200 characters
URL that will be opened by the user's client. If you have created a Game and accepted the conditions via @Botfather, specify the URL that opens your game — note that this will only work if the query comes from a callback_game button. Otherwise, you may use links like t.me/your_bot?start=XXXX that open your bot with a parameter.
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The maximum amount of time in seconds that the result of the callback query may be cached client-side. Telegram apps will support caching starting in version 3.14. Defaults to 0.