Initial draft

lib/dto/address.dart

@@ -0,0 +1,20 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'address.g.dart';
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class AddressDTO {
+  AddressDTO(
+      {required this.streetName,
+      required this.postalCode,
+      required this.city});
+
+  String streetName;
+  String postalCode;
+  String city;
+
+  factory AddressDTO.fromJson(Map<String, dynamic> json) =>
+      _$AddressDTOFromJson(json);
+
+  Map<dynamic, dynamic> toJson() => _$AddressDTOToJson(this);
+}