private DistrictModel dummyDataDistrict() {
    final DistrictModel districtModel =
        new DistrictModel(); // modelService.create(DistrictModel.class); // new DistrictModel();
    districtModel.setCode("TEST-DISTRICT-CODE");
    districtModel.setName("TEST-DISTRICT-NAME-EN", Locale.ENGLISH);
    districtModel.setName("TEST-DISTRICT-NAME-ZH", Locale.CHINESE);

    final CityModel cityModel =
        new CityModel(); // modelService.create(CityModel.class); //new CityModel();
    cityModel.setCode("TEST-CITY-CODE");
    cityModel.setName("TEST-CITY-NAME-EN", Locale.ENGLISH);
    cityModel.setName("TEST-CITY-NAME-ZH", Locale.CHINESE);

    districtModel.setCity(cityModel);

    return districtModel;
  }