load_from_api.dart

  _loadFromApi() async {
    setState(() {
      isLoading = true;
    });

    var apiProvider = EmployeeApiProvider();
    await apiProvider.getAllEmployees();

    // wait for 2 seconds to simulate loading of data
    await Future.delayed(const Duration(seconds: 2));

    setState(() {
      isLoading = false;
    });
  }