*/
    public void deleteUserCodeFromCookie(final HttpServletRequest request) {
        final String cookieValue = getUserCodeFromCookie(request);
        if (cookieValue != null) {
            updateCookie(StringUtil.EMPTY, 0);
        }
    }

    /**
     * Extracts the user code from request parameters.
     * This method looks for the user code in the request parameters and validates it.
     *