Item.fromJson constructor
Implementation
factory Item.fromJson(Map<String, dynamic> json) => Item(
name: json["name"],
price: json["price"],
quantity: json["quantity"],
sum: json["sum"],
measurementUnit: json["measurement_unit"],
paymentMethod: json["payment_method"],
paymentObject: json["payment_object"],
vat: Vat.fromJson(json["vat"]),
);