toJson method
Implementation
@override
Map<String, dynamic> toJson() => <String, dynamic>{
'id': id,
'title': title,
'description': description,
'thumbnail_url': thumbnailUrl,
'video_url': videoUrl,
'mime_type': mimeType,
'video_width': videoWidth,
'video_height': videoHeight,
'video_duration': videoDuration,
'reply_markup': replyMarkup?.toJson(),
'input_message_content': inputMessageContent?.toJson(),
'@type': constructor,
};