toJson method
Implementation
Map<String, dynamic> toJson() => {
"npk_current_values": List<dynamic>.from(npk_current_values.map((x) => x.toJson())),
"npk_change_values": List<dynamic>.from(npk_change_values.map((x) => x.toJson())),
"result": List<dynamic>.from(result.map((x) => x.toJson())),
};