1. Import

lib/model/tour_position.dart

@@ -0,0 +1,18 @@
+import 'package:isar/isar.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+part 'tour_position.g.dart';
+
+@embedded
+@JsonSerializable()
+class TourPosition {
+  late double lat;
+  late double long;
+
+  TourPosition();
+
+  factory TourPosition.fromJson(Map<String, dynamic> json) => _$TourPositionFromJson(json);
+
+  Map<String, dynamic> toJson() => _$TourPositionToJson(this);
+}
+