### Question:
ModelUtils { public static void normalizeRegionWidgetPreferences(String regionWidgetId, List<RegionWidgetPreference> preferences) { for (RegionWidgetPreference preference : preferences) { normalizeRegionWidgetPreference(regionWidgetId, preference); } } private  ModelUtils(); static void normalizeRegionWidgetPreferences(String regionWidgetId, List<RegionWidgetPreference> preferences); static void normalizeRegionWidgetPreference(String regionWidgetId, RegionWidgetPreference regionWidgetPreference); static final String STANDARD_DATE_FORMAT; }### Answer:
@Test public void normalizeRegionWidgetPreferences() { List<RegionWidgetPreference> testPreferences = getTestRegionWidgetPreferences(); ModelUtils.normalizeRegionWidgetPreferences(VALID_REGION_WIDGET_ID, testPreferences); for (RegionWidgetPreference testPreference : testPreferences) { assertTrue(testPreference.getRegionWidgetId() == VALID_REGION_WIDGET_ID); } }