Aacotroneo\Saml2\Http\Controllers\Saml2Controller::sls PHP Method

    public function sls()
    {
        $error = $this->saml2Auth->sls(config('saml2_settings.retrieveParametersFromServer'));
        if (!empty($error)) {
            throw new \Exception("Could not log out");
        }
        return redirect(config('saml2_settings.logoutRoute'));
        //may be set a configurable default
    }