toJson method
Implementation
Map<String, dynamic> toJson() {
final json = <String, dynamic>{};
json[r'first'] = this.first;
json[r'last'] = this.last;
json[r'max'] = this.max;
json[r'min'] = this.min;
json[r'start_ts'] = this.startTs.toUtc().toIso8601String();
return json;
}