class RouteProvider

class RouteProvider implements PreloadableRouteProviderInterface, PagedRouteProviderInterface {
    use \Drupal\Core\DependencyInjection\DependencySerializationTrait;
    
    /**
     * Loads the real route provider from the container and rebuilds the router.
     *
     * @return \Drupal\Core\Routing\PreloadableRouteProviderInterface|\Symfony\Cmf\Component\Routing\PagedRouteProviderInterface|\Symfony\Component\EventDispatcher\EventSubscriberInterface
     *   The route provider.
     */
    protected function lazyLoadItself() {
        if (!isset($this->service)) {
            $container = \Drupal::getContainer();
            $this->service = $container->get('simpletest.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();
    }
    
    /**
     * {@inheritdoc}
     */
    public function getRoutesPaged($offset, $length = NULL) {
        return $this->lazyLoadItself()
            ->getRoutesPaged($offset, $length);
    }
    
    /**
     * {@inheritdoc}
     */
    public function getRoutesCount() {
        return $this->lazyLoadItself()
            ->getRoutesCount();
    }

}