toJson method

Implementation

@override
Map<String, dynamic> toJson() {
  final Map<String, dynamic> json = <String, dynamic>{};
  if (line != null) {
    json['line'] = line!.toJson();
  }
  if (points != null) {
    json['points'] = points!.map((e) => e.toJson()).toList();
  }
  if (xAxis != null) {
    json['xAxis'] = xAxis;
  }
  if (yAxis != null) {
    json['yAxis'] = yAxis;
  }
  return json;
}