final Locale locale = LaRequestUtil.getOptionalRequest().map(HttpServletRequest::getLocale).orElse(Locale.ROOT);
        return ComponentUtil.getMessageManager().findMessage(locale, key).orElse(defaultValue);
    }

    /**
     * Checks if the current user has the specified action role or administrative privileges.
     *

                        final List<Map<String, String>> langItems = new ArrayList<>(supportedLanguages.length);
                        final String msg = ComponentUtil.getMessageManager().getMessage(displayLocale, "labels.allLanguages");
                        final Map<String, String> defaultMap = new HashMap<>(2);
                        defaultMap.put(Constants.ITEM_LABEL, msg);

            createdStr = sdf.format(created);
        } else {
            createdStr = ComponentUtil.getMessageManager().getMessage(locale, "labels.search_unknown");
        }
        doc.put(CACHE_MSG, ComponentUtil.getMessageManager().getMessage(locale, "labels.search_cache_msg", url, createdStr));

        doc.put(QUERIES, queries);

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