/**
     * {@link DecimalFormatSymbols}を返します。
     *
     * @param locale
     *            ロケール。{@literal null}であってはいけません
     * @return {@link DecimalFormatSymbols}
     */
    public static DecimalFormatSymbols getDecimalFormatSymbols(final Locale locale) {
        assertArgumentNotNull("locale", locale);

        DecimalFormatSymbols symbols = CACHE.get(locale);
        if (symbols == null) {

        asDocMeta().version(version);
    }

    public Locale getLocale() {
        if (locale == null) {
            if (getValue() == null) {
                return Locale.ROOT;
            }
            locale = ComponentUtil.getFessConfig().getQueryLocaleFromName(getValue());
        }
        return locale;
    }

    @Override
    public String toString() {

        df.applyPattern(pattern);
        return df.format(value);
    }

    private static Locale getUserLocale() {
        final Locale locale = ComponentUtil.getRequestManager().getUserLocale();
        if (locale == null) {
            return Locale.ROOT;
        }
        return locale;
    }

    public static String formatFileSize(final long value) {
        double target = value;

        /** ロケール */
        protected final Locale locale;

        /** 現在のスタイルを示すインデックス */
        protected int index;

        /**
         * インスタンスを構築します。
         *
         * @param locale
         *            ロケール
         */
        public DateFormatIterator(final Locale locale) {
            this.locale = locale;
        }

        @Override

     *
     * @param s
     *            数値を表す文字列
     * @param locale
     *            ロケール。{@literal null}であってはいけません
     * @return 正規化された文字列
     */
    public static String normalize(final String s, final Locale locale) {
        assertArgumentNotNull("locale", locale);

        if (s == null) {
            return null;
        }

        }
        dataStoreMap.put(name.toLowerCase(Locale.ROOT), dataStore);
        dataStoreMap.put(dataStore.getClass().getSimpleName().toLowerCase(Locale.ROOT), dataStore);
    }

    public DataStore getDataStore(final String name) {
        if (name == null) {
            return null;
        }
        return dataStoreMap.get(name.toLowerCase(Locale.ROOT));
    }

    public String[] getDataStoreNames() {

            });
        }
        return crawlingInfo;
    }

    public String getKeyMsg() {
        final Locale locale = ComponentUtil.getRequestManager().getUserLocale();
        final String message = ComponentUtil.getMessageManager().getMessage(locale, "labels.crawling_info_" + getKey());
        if (message == null || message.startsWith("???")) {
            return getKey();
        }

    //                                                                       =============
    protected String resolveLabelIfNeeds(final MessageManager messageManager, final Locale locale, final String label) {
        return label.startsWith("labels.") ? messageManager.getMessage(locale, label) : label;
    }

    // ===================================================================================

        final String delim = NumberConversionUtil.findDecimalSeparator(Locale.JAPAN);
        assertEquals(".", delim);
    }

    /**
     * @throws Exception
     */
    public void testFindFractionDelimeter2() throws Exception {
        final String delim = NumberConversionUtil.findDecimalSeparator(Locale.FRANCE);
        assertEquals(",", delim);
    }

    /**
     * @throws Exception

                    @Override
                    public List<Map<String, String>> load(final String key) throws Exception {
                        final ULocale uLocale = new ULocale(key);
                        final Locale displayLocale = uLocale.toLocale();
                        final List<Map<String, String>> langItems = new ArrayList<>(supportedLanguages.length);