toJson method

@override Map<String, dynamic> toJson()

Implementation

@override
Map<String, dynamic> toJson() {
  final json = <String, dynamic>{};

  void addIfPresent(String fieldName, dynamic value) {
    if (value != null) {
      json[fieldName] = value;
    }
  }

  json["type"] = "image";
  addIfPresent('url', url);
  addIfPresent('coordinates', coordinates);
  return json;
}