return username;
        }
        // For guest users, use cookie-based userCode for session identification
        return ComponentUtil.getUserInfoHelper().getUserCode();
    }

    /**
     * Returns the maximum message length for chat messages.
     *
     * @param fessConfig the Fess configuration
     * @return the maximum message length
     */

        final String[] roles = ComponentUtil.getRoleQueryHelper().build(params.getType()).stream().toArray(n -> new String[n]);
        final String userCode = fessConfig.isUserInfo() ? ComponentUtil.getUserInfoHelper().getUserCode() : null;
        final String userId = ComponentUtil.getRequestManager().findUserBean(FessUserBean.class).map(FessUserBean::getUserId).orElse(null);

                    .ifPresent(doc -> {
                        final String favoriteUrl = DocumentUtil.getValue(doc, fessConfig.getIndexFieldUrl(), String.class);
                        final String userCode = userInfoHelper.getUserCode();

                        if (StringUtil.isBlank(userCode)) {
                            throw new WebApiException(HttpServletResponse.SC_BAD_REQUEST, "No user session.");
                        }