toJson method
Implementation
@override
Map<String, dynamic> toJson() => <String, dynamic>{
'business_connection_id': businessConnectionId,
'chat_id': chatId,
'message_id': messageId,
'reply_markup': replyMarkup?.toJson(),
'caption': caption?.toJson(),
'show_caption_above_media': showCaptionAboveMedia,
'@type': constructor,
};