### Question:
LocaleHelper { public static boolean isSpecialLocale (@Nullable final Locale aLocale) { return LOCALE_ALL.equals (aLocale) || LOCALE_INDEPENDENT.equals (aLocale); } private  LocaleHelper(); @Nonnull static String getLocaleDisplayName(@Nullable final Locale aLocale, @Nonnull final Locale aContentLocale); @Nonnull static String getLocaleNativeDisplayName(@Nonnull final Locale aLocale); @Nonnull @ReturnsMutableCopy static ICommonsMap <Locale, String> getAllLocaleDisplayNames(@Nonnull final Locale aContentLocale); @Nonnull @ReturnsImmutableObject @CodingStyleguideUnaware static List <Locale> getCalculatedLocaleListForResolving(@Nonnull final Locale aLocale); @Nonnull static Locale getLocaleFromString(@Nullable final String sLocaleAsString); @Nullable static Locale getLocaleToUseOrNull(@Nonnull final Locale aRequestLocale, @Nonnull final Collection <Locale> aAvailableLocales); @Nullable static Locale getLocaleToUseOrFallback(@Nonnull final Locale aRequestLocale,
                                                 @Nonnull final Collection <Locale> aAvailableLocales,
                                                 @Nullable final Locale aFallback); static boolean isSpecialLocale(@Nullable final Locale aLocale); static boolean isSpecialLocaleCode(@Nullable final String sLocale); @Nullable static String getValidLanguageCode(@Nullable final String sCode); @Nullable static String getValidCountryCode(@Nullable final String sCode); @Nonnull static EChange clearCache(); static final char LOCALE_SEPARATOR; static final String STR_ALL; static final Locale LOCALE_ALL; static final String STR_INDEPENDENT; static final Locale LOCALE_INDEPENDENT; }### Answer:
@Test public void testIsSpecialLocale () { assertTrue (LocaleHelper.isSpecialLocale (LocaleHelper.LOCALE_ALL)); assertTrue (LocaleHelper.isSpecialLocale (LocaleHelper.LOCALE_INDEPENDENT)); assertFalse (LocaleHelper.isSpecialLocale (null)); assertFalse (LocaleHelper.isSpecialLocale (LocaleCache.getInstance ().getLocale ("de"))); }