if (!labelTypeItems.isEmpty() && !form.fields.containsKey(FessSearchAction.LABEL_FIELD)) {
            final String[] defaultLabelValues = fessConfig.getDefaultLabelValues(getUserBean());
            if (defaultLabelValues.length > 0) {
                form.fields.put(FessSearchAction.LABEL_FIELD, defaultLabelValues);
            }
        }

        final Map<String, String> labelMap = new LinkedHashMap<>();

    String ROLE_VALUE_PREFIX = "role:";

    String APP_VALUES = "appValues";

    String DEFAULT_SORT_VALUES = "defaultSortValues";

    String DEFAULT_LABEL_VALUES = "defaultLabelValues";

    String VIRTUAL_HOST_VALUES = "virtualHostValues";

    String QUERY_LANGUAGE_MAPPING = "queryLanguageMapping";

    String CRAWLER_METADATA_NAME_MAPPING = "crawlerMetadataNameMapping";