toJson method

@override Map<String, dynamic> toJson()

Implementation

@override
Map<String, dynamic> toJson() {
  final Map<String, dynamic> json = <String, dynamic>{};
  if (categories != null) {
    json['categories'] = categories;
  }
  if (time != null) {
    json['time'] = time;
  }
  if (values != null) {
    json['values'] = values;
  }
  return json;
}