Style of the button.
Text of the button; only richTexts, richTextPlain, and richTextCustomEmoji are allowed.
Type of the button; must be one of inlineKeyboardButtonTypeUrl, inlineKeyboardButtonTypeLoginUrl, inlineKeyboardButtonTypeWebApp, inlineKeyboardButtonTypeCallback, inlineKeyboardButtonTypeSwitchInline, inlineKeyboardButtonTypeUser, inlineKeyboardButtonTypeCopyText. Additionally, inlineKeyboardButtonTypeCallbackWithPassword and inlineKeyboardButtonTypeDisabled may be received in incoming messages. Regular users may use only inlineKeyboardButtonTypeUrl, inlineKeyboardButtonTypeUser and inlineKeyboardButtonTypeCopyText.
Represents a button inside a rich message.