/**
     * @throws Exception
     */
    public void testGetLocale() throws Exception {
        assertEquals("1", LocaleUtil.getDefault(), LocaleUtil.getLocale(null));
        assertEquals("2", Locale.JAPANESE, LocaleUtil.getLocale("ja"));
        assertEquals("3", Locale.JAPAN, LocaleUtil.getLocale("ja_JP"));
    }

        final FessMessages messages = new FessMessages();
        validationMessagesLambda.message(messages);
        return messageManager.toMessageList(request.getLocale() == null ? Locale.ENGLISH : request.getLocale(), messages)
                .stream()
                .collect(Collectors.joining(" "));
    }

    /**

     */
    public static final ResourceBundle getBundle(final String name, final Locale locale) {
        assertArgumentNotEmpty("name", name);

        try {
            return ResourceBundle.getBundle(name, getLocale(locale));
        } catch (final MissingResourceException ignore) {
            return null;
        }
    }

    /**
     * Returns the bundle. Returns <code>null</code> if not found.
     *

    }

    public Long getVersionNo() {
        return asDocMeta().version();
    }

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

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

    }

    /**
     * Returns a {@link Locale}.
     *
     * @param localeStr
     *            A string representing the locale
     * @return {@link Locale}
     */
    public static Locale getLocale(final String localeStr) {
        // TODO replace with Fess
        Locale locale = LocaleUtil.getDefault();
        if (localeStr != null) {
            final int index = localeStr.indexOf('_');
            if (index < 0) {

    @Override
    public Object getAttribute(final String name) {
        return LaRequestUtil.getOptionalRequest().map(req -> req.getAttribute(name)).orElse(null);
    }

    @Override
    public Locale getLocale() {
        return ComponentUtil.getRequestManager().getUserLocale();
    }

    @Override
    public SearchRequestType getType() {
        return SearchRequestType.ADMIN_SEARCH;
    }

    @Override

    @Override
    public Object getAttribute(final String name) {
        return LaRequestUtil.getOptionalRequest().map(req -> req.getAttribute(name)).orElse(null);
    }

    @Override
    public Locale getLocale() {
        return ComponentUtil.getRequestManager().getUserLocale();
    }

    @Override
    public SearchRequestType getType() {
        return SearchRequestType.SEARCH;
    }

    @Override

     * @return The attribute.
     */
    public abstract Object getAttribute(String name);

    /**
     * Returns the locale.
     *
     * @return The locale.
     */
    public abstract Locale getLocale();

    /**
     * Returns the search request type.
     *
     * @return The search request type.
     */
    public abstract SearchRequestType getType();

    /**

    protected OptionalThing<String[]> getQueryLanguages() {
        return LaRequestUtil.getOptionalRequest()
                .map(request -> ComponentUtil.getFessConfig()
                        .getQueryLanguages(request.getLocales(), (String[]) request.getAttribute(Constants.REQUEST_LANGUAGES)));
    }

    /**
     * Builds a default query builder with configured fields and boost values.
     * @param fessConfig The Fess configuration.