* Gets the help URL for a given base URL.
     *
     * @param url The base URL.
     * @return The localized help URL.
     */
    protected String getHelpUrl(final String url) {
        final Locale locale = ComponentUtil.getRequestManager().getUserLocale();
        if (locale != null) {
            final String lang = locale.getLanguage();
            if (ComponentUtil.getFessConfig().isOnlineHelpSupportedLang(lang)) {

        assertFalse(labelTypeHelper.matchLocale(Locale.ENGLISH, Locale.JAPANESE));
        assertFalse(labelTypeHelper.matchLocale(Locale.SIMPLIFIED_CHINESE, Locale.TRADITIONAL_CHINESE));

        assertTrue(labelTypeHelper.matchLocale(null, Locale.ROOT));
        assertTrue(labelTypeHelper.matchLocale(Locale.ENGLISH, Locale.ROOT));
        assertTrue(labelTypeHelper.matchLocale(Locale.ROOT, Locale.ROOT));

        // Execute
        OptionalThing<Locale> result = provider.findBusinessLocale(null, mockRequestManager);

        // Verify
        assertTrue(result.isPresent());
        Locale locale = result.get();
        assertEquals("no", locale.getLanguage());
        assertEquals("NO", locale.getCountry());
        assertEquals("NY", locale.getVariant());
    }

        case 1:
            return new Locale(parts[0]);
        case 2:
            return new Locale(parts[0], parts[1]);
        case 3:
            return new Locale(parts[0], parts[1], parts[2]);
        default:
            return LocaleUtil.getDefault();
        }
    }

    private static Supplier<Locale> defaultLocaleSupplier;

    /**
     * Returns the default locale.
     *
     * @return the default locale

        // Test with various locale configurations
        Locale[] testLocales = { Locale.US, Locale.UK, Locale.CANADA, Locale.FRANCE, Locale.CHINA, Locale.KOREA, new Locale("es", "ES"),
                new Locale("pt", "BR") };

        for (Locale locale : testLocales) {
            OptionalThing<String> result = provider.determineAlias(locale);

            final String language = locale.getLanguage();
            final String country = locale.getCountry();
            if (StringUtil.isNotBlank(language)) {
                if (StringUtil.isNotBlank(country)) {
                    return language.toLowerCase(Locale.ROOT) + "-" + country.toLowerCase(Locale.ROOT);
                }

        @Override
        public void removeAttribute(String name) {
        }

        @Override
        public java.util.Locale getLocale() {
            return java.util.Locale.getDefault();
        }

        @Override
        public java.util.Enumeration<java.util.Locale> getLocales() {
            return java.util.Collections.emptyEnumeration();
        }

        @Override

                request.getLocale() == null ? Locale.ROOT : request.getLocale());
        runtime.registerData("labelTypeItems", labelTypeItems);
        runtime.registerData("displayLabelTypeItems", labelTypeItems != null && !labelTypeItems.isEmpty());

        Locale locale = ComponentUtil.getRequestManager().getUserLocale();
        if (locale == null) {
            locale = Locale.ENGLISH;
        }

    public void test_getForumLink() {
        getMockRequest().setLocale(Locale.ENGLISH);
        assertEquals("https://discuss.codelibs.org/c/FessEN/", systemHelper.getForumLink());
        getMockRequest().setLocale(Locale.JAPANESE);
        assertEquals("https://discuss.codelibs.org/c/FessJA/", systemHelper.getForumLink());
        getMockRequest().setLocale(Locale.ITALIAN);

    }

    @Test
    public void test_getLocalizedMessage() {
        // Test getLocalizedMessage (should be same as getMessage for this exception)
        String message = "Localized message test";
        UnsupportedSearchException exception = new UnsupportedSearchException(message);

        assertEquals(exception.getMessage(), exception.getLocalizedMessage());
    }

    @Test