private function buildDriver($driver, array $extra = [])
    {
        $router  = $this->app->make(\Illuminate\Contracts\Routing\Registrar::class);
        $class   = Seo::getConfig("redirector.drivers.$driver.class");
        $options = Seo::getConfig("redirector.drivers.$driver.options", []);

        return new $class($router, array_merge($extra, $options));
    }