toJson method
Implementation
@override
Map<String, dynamic> toJson() => <String, dynamic>{
'id': id,
'venue': venue?.toJson(),
'thumbnail_url': thumbnailUrl,
'thumbnail_width': thumbnailWidth,
'thumbnail_height': thumbnailHeight,
'reply_markup': replyMarkup?.toJson(),
'input_message_content': inputMessageContent?.toJson(),
'@type': constructor,
};