final String[] urls = resultUrlCache.get(queryId);
            if (urls != null) {
                return urls;
            }
            return StringUtil.EMPTY_STRINGS;
        }).orElse(StringUtil.EMPTY_STRINGS);
    }

    private Map<String, String[]> getResultDocIdsCache(final HttpSession session) {
        @SuppressWarnings("unchecked")

            public boolean hasRoles(final String[] acceptedRoles) {
                return true;
            }

            @Override
            public String[] getRoles() {
                return StringUtil.EMPTY_STRINGS;
            }

            @Override
            public boolean isEditable() {
                return false;
            }
        };
    }

    /* (non-Javadoc)
     * @see org.codelibs.fess.db.exentity.CrawlingConfig#getLabelTypeIds()
     */
    public String[] getLabelTypeIds() {
        if (labelTypeIds == null) {
            return StringUtil.EMPTY_STRINGS;
        }
        return labelTypeIds;
    }

    public void setLabelTypeIds(final String[] labelTypeIds) {
        this.labelTypeIds = labelTypeIds;
    }

    public List<LabelType> getLabelTypeList() {

        if (map != null) {
            final String[] queries = map.get(toLowerCase(query));
            if (queries != null) {
                return queries;
            }
        }
        return StringUtil.EMPTY_STRINGS;
    }

    private String toLowerCase(final String term) {
        return term != null ? term.toLowerCase(Locale.ROOT) : term;
    }

                final String[] toAddresses;
                if (StringUtil.isNotBlank(toStrs)) {
                    toAddresses = toStrs.split(",");
                } else {
                    toAddresses = StringUtil.EMPTY_STRINGS;
                }
                final Postbox postbox = ComponentUtil.getComponent(Postbox.class);
                try {

        final String index = fessConfig.getIndexDocumentUpdateIndex();
        final Object url = params.get("url");
        if (url == null) {
            return StringUtil.EMPTY_STRINGS;
        }
        final SearchResponse response = client.prepareSearch(index).setQuery(QueryBuilders.termQuery(fessConfig.getIndexFieldUrl(), url))

        final List<SuggestItem> items = new ArrayList<>();

        final String index;
        if (hits.length > 0) {
            index = hits[0].getIndex();
        } else {
            index = SuggestConstants.EMPTY_STRING;
        }

        for (final SearchHit hit : hits) {
            final Map<String, Object> source = hit.getSourceAsMap();
            final String text = source.get(FieldNames.TEXT).toString();

// otherwise it returns false.
func ValuesAreSameType(v1 reflect.Value, v2 reflect.Value) bool {
	return v1.Type() == v2.Type()
}

// IsEmptyString returns true if value is an empty string.
func IsEmptyString(value any) bool {
	if value == nil {
		return true
	}
	switch kindOf(value) {
	case reflect.String:
		if _, ok := value.(string); ok {
			return value.(string) == ""
		}

    private static final Logger logger = LogManager.getLogger(DataStoreFactory.class);

    protected Map<String, DataStore> dataStoreMap = new LinkedHashMap<>();

    protected String[] dataStoreNames = StringUtil.EMPTY_STRINGS;

    protected long lastLoadedTime = 0;

    public void add(final String name, final DataStore dataStore) {
        if (name == null || dataStore == null) {

                }
            }
            return contentList.toArray(new String[contentList.size()]);
        }
        return StringUtil.EMPTY_STRINGS;
    }

    private String toLowerCase(final String term) {
        return term != null ? term.toLowerCase(Locale.ROOT) : term;
    }

    public void setRegexPrefix(final String regexPrefix) {