class RouteProvider

class RouteProvider implements PreloadableRouteProviderInterface {
  use \Drupal\Core\DependencyInjection\DependencySerializationTrait;
  
  /**
   * The route provider service.
   */
  protected RouteProviderBase $service;
  
  /**
   * Loads the real route provider from the container and rebuilds the router.
   *
   * @return \Drupal\Core\Routing\PreloadableRouteProviderInterface|\Symfony\Component\EventDispatcher\EventSubscriberInterface
   *   The route provider.
   */
  protected function lazyLoadItself() {
    if (!isset($this->service)) {
      $container = \Drupal::getContainer();
      $this->service = $container->get('test.router.route_provider');
      $container->get('router.builder')
        ->rebuild();
    }
    return $this->service;
  }
  
  /**
   * {@inheritdoc}
   */
  public function getRouteCollectionForRequest(Request $request) {
    return $this->lazyLoadItself()
      ->getRouteCollectionForRequest($request);
  }
  
  /**
   * {@inheritdoc}
   */
  public function getRouteByName($name) {
    return $this->lazyLoadItself()
      ->getRouteByName($name);
  }
  
  /**
   * {@inheritdoc}
   */
  public function preLoadRoutes($names) {
    return $this->lazyLoadItself()
      ->preLoadRoutes($names);
  }
  
  /**
   * {@inheritdoc}
   */
  public function getRoutesByNames($names) {
    return $this->lazyLoadItself()
      ->getRoutesByNames($names);
  }
  
  /**
   * {@inheritdoc}
   */
  public function getCandidateOutlines(array $parts) {
    return $this->lazyLoadItself()
      ->getCandidateOutlines($parts);
  }
  
  /**
   * {@inheritdoc}
   */
  public function getRoutesByPattern($pattern) {
    return $this->lazyLoadItself()
      ->getRoutesByPattern($pattern);
  }
  
  /**
   * {@inheritdoc}
   */
  public function routeProviderRouteCompare(array $a, array $b) {
    return $this->lazyLoadItself()
      ->routeProviderRouteCompare($a, $b);
  }
  
  /**
   * {@inheritdoc}
   */
  public function getAllRoutes() {
    return $this->lazyLoadItself()
      ->getAllRoutes();
  }
  
  /**
   * {@inheritdoc}
   */
  public function reset() {
    return $this->lazyLoadItself()
      ->reset();
  }

}