private static final long serialVersionUID = 1L;

    /** The key of the message: Realm */
    public static final String LABELS_AUTH_REALM = "{labels.authRealm}";

    /** The key of the message: Status */
    public static final String LABELS_AVAILABLE = "{labels.available}";

    /** The key of the message: Created By */
    public static final String LABELS_CREATED_BY = "{labels.createdBy}";

     */
    protected long deleteOldDocuments(final SearchEngineClient searchEngineClient, final DocList docList) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        final List<String> docIdList = new ArrayList<>();
        for (final Map<String, Object> inputDoc : docList) {
            final Object idValue = inputDoc.get(fessConfig.getIndexFieldId());

    protected String replaceHighlightQueries(final String cache, final String[] queries) {
        final StringBuffer buf = new StringBuffer(cache.length() + 100);
        final StringBuffer segBuf = new StringBuffer(1000);
        final Pattern p = Pattern.compile("<[^>]+>");
        final Matcher m = p.matcher(cache);
        final String[] regexQueries = new String[queries.length];
        final String[] hlQueries = new String[queries.length];

     * @return an array of role names
     */
    public String[] getRoles(final LdapUser ldapUser, final String bindDn, final String accountFilter, final String groupFilter,
            final Consumer<String[]> lazyLoading) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final Set<String> roleSet = new HashSet<>();

        if (fessConfig.isLdapRoleSearchUserEnabled()) {

     * @return A set of roles.
     */
    public Set<String> build(final SearchRequestType searchRequestType) {
        final Set<String> roleSet = new HashSet<>();
        final HttpServletRequest request = LaRequestUtil.getOptionalRequest().orElse(null);
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final boolean isApiRequest =

     */
    public static void updateObjectTags(final String objectName, final Map<String, String> tagItems) {
        final Map<String, String> tags = new HashMap<>();
        tagItems.keySet().stream().filter(s -> s.startsWith("name")).forEach(nameKey -> {
            final String valueKey = nameKey.replace("name", "value");
            final String name = tagItems.get(nameKey);
            if (StringUtil.isNotBlank(name)) {

     * @param labelTypeList The list of label types.
     */
    protected void buildLabelTypePatternList(final List<LabelType> labelTypeList) {
        final List<LabelTypePattern> list = new ArrayList<>();
        for (final LabelType labelType : labelTypeList) {
            final String includedPaths = labelType.getIncludedPaths();
            final String excludedPaths = labelType.getExcludedPaths();

     */
    protected ResponseData getResponseData(final String uri, final boolean includeContent) {
        final ResponseData responseData = new ResponseData();
        responseData.setMethod(Constants.GET_METHOD);
        final String filePath = preprocessUri(uri);
        responseData.setUrl(filePath);

        SmbFile file = null;
        final SmbAuthentication smbAuthentication = smbAuthenticationHolder.get(filePath);

     */
    protected boolean startReindex(final boolean replaceAliases, final boolean resetDictionaries, final String numberOfShards,
            final String autoExpandReplicas) {
        final String docIndex = "fess";
        final String fromIndex = fessConfig.getIndexDocumentUpdateIndex();

    protected String[] targetUsers;

    @Override
    public void update(final User user) {
        final String username = user.getName();
        final String password = user.getOriginalPassword();
        changePassword(username, password);
    }

    @Override
    public void delete(final User user) {
        final String username = user.getName();
        if (isTargetUser(username)) {