validationMessagesLambda.message(messages);
            message = ComponentUtil.getMessageManager()
                    .toMessageList(LaRequestUtil.getOptionalRequest().map(HttpServletRequest::getLocale).orElse(Locale.ENGLISH), messages)
                    .stream()
                    .collect(Collectors.joining(" "));
            return this;
        }
    }

    /**

     * @return localized message or default value
     */
    public static String getMessage(final String key, final String defaultValue) {
        final Locale locale = LaRequestUtil.getOptionalRequest().map(HttpServletRequest::getLocale).orElse(Locale.ROOT);
        return ComponentUtil.getMessageManager().findMessage(locale, key).orElse(defaultValue);
    }

    /**

                return Collections.singleton("highlight query");
            }
            return null;
        }

        @Override
        public Locale getLocale() {
            return locale;
        }

        @Override
        public SearchRequestType getType() {
            return type;
        }

        @Override

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

    /**

            return null;
        }

        @Override
        public Object getAttribute(String name) {
            return null;
        }

        @Override
        public Locale getLocale() {
            return null;
        }

        @Override
        public SearchRequestType getType() {
            return null;
        }

        @Override

            // Label type items for filter UI
            final List<Map<String, String>> labelTypeItems = labelTypeHelper.getLabelTypeItemList(SearchRequestType.SEARCH,
                    request.getLocale() == null ? Locale.ROOT : request.getLocale());
            RenderDataUtil.register(data, "labelTypeItems", labelTypeItems);
            RenderDataUtil.register(data, "displayLabelTypeItems", labelTypeItems != null && !labelTypeItems.isEmpty());

        @Override
        public void removeAttribute(String name) {
        }

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

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

        @Override
        public boolean isSecure() {

        final List<Map<String, String>> labelTypeItems = labelTypeHelper.getLabelTypeItemList(SearchRequestType.SEARCH,
                request.getLocale() == null ? Locale.ROOT : request.getLocale());
        runtime.registerData("labelTypeItems", labelTypeItems);
        runtime.registerData("displayLabelTypeItems", labelTypeItems != null && !labelTypeItems.isEmpty());

                RenderDataUtil.register(data, "displayQuery", getDisplayQuery(form, labelTypeHelper
                        .getLabelTypeItemList(SearchRequestType.SEARCH, request.getLocale() == null ? Locale.ROOT : request.getLocale())));
                createPagingQuery(form);
                final String[] relatedContents = relatedContentHelper.getRelatedContents(form.getQuery());

        if (labels != null && labels.length > 0) {
            // Validate against configured label types (union of request locale and ROOT for robustness)
            final Locale requestLocale = request.getLocale() != null ? request.getLocale() : Locale.ROOT;
            final Set<String> allowedLabels = new java.util.HashSet<>();
            ComponentUtil.getLabelTypeHelper()