How can I implement background data sync in a Flutter app?

<!-- BEGIN COPY / PASTE -->
    import 'package:workmanager/workmanager.dart';

    void callbackDispatcher() {
      Workmanager().executeTask((task, inputData) {
        // Perform background data sync here
        // Example: Fetch data from API and store it locally
        return Future.value(true);
      });
    }

    void main() {
      Workmanager().initialize(
        callbackDispatcher,
        isInDebugMode: true, // Set to false in production
      );
      Workmanager().registerPeriodicTask(
        "1",
        "simplePeriodicTask",
        frequency: Duration(hours: 1),
      );
      runApp(MyApp());
    }
    <!-- END COPY / PASTE -->