import 'package:inventory_app/models/product.dart'; class TrackingNumber { int? id; int? version; String? trackingNumberSeq; String? perishableExpirationDate; Product? product; TrackingNumber({ this.id, this.version, this.trackingNumberSeq, this.perishableExpirationDate, this.product, }); TrackingNumber.fromJson(Map json) { id = json['id']; version = json['version']; trackingNumberSeq = json['trackingNumberSeq']; perishableExpirationDate = json['perishableExpirationDate']; product = json['product']; } Map toJson() { final Map data = new Map(); data['id'] = this.id; data['version'] = this.version; data['trackingNumberSeq'] = this.trackingNumberSeq; data['perishableExpirationDate'] = this.perishableExpirationDate; data['product'] = this.product; return data; } }