private function setUserModelConfig()
    {
        if (config('defender.user_model') == '') {
            if (str_contains($this->app->version(), '5.1')) {
                return config(['defender.user_model' => $this->app['auth']->getProvider()->getModel()]);
            }

            return config(['defender.user_model' => $this->app['auth']->guard()->getProvider()->getModel()]);
        }
    }