toJson method
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = <String, dynamic>{};
if (transcript != null) data['transcript'] = transcript;
if (type != null) data['type'] = type;
if (text != null) data['text'] = text;
if (imageUrl != null) data['image_url'] = imageUrl!.toJson();
return data;
}