search(fessConfig.getLdapAdminUserBaseDn(), fessConfig.getLdapAdminUserFilter(username), null, adminEnv, result -> {
            if (result.isEmpty()) {
                throw new LdapOperationException("User is not found: " + username);
            }
            final List<ModificationItem> modifyList = new ArrayList<>();
            modifyReplaceEntry(modifyList, "userPassword", password);
            modify(userDN, modifyList, adminEnv);

            }
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to create {} index.", indexName);
            }
        } catch (final Exception e) {
            logger.warn("{} is not found.", indexConfigFile, e);
        }

        return false;
    }

    public boolean deleteIndex(final String indexName) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        try {

                        }

                        boolean found = false;
                        for (final String id : docIds) {
                            if (docId.equals(id)) {
                                found = true;
                                break;
                            }
                        }
                        if (!found) {