* @return HTML response redirecting to the appropriate admin interface
     */
    protected HtmlResponse redirectByUser(final FessUserBean user) {
        if (user.hasRoles(fessConfig.getAuthenticationAdminRolesAsArray())) {
            return redirect(AdminDashboardAction.class);
        }
        final Class<? extends FessAdminAction> actionClass = AdminAction.getAdminActionClass(user);
        if (actionClass != null) {