Expanded class hierarchy of RouteProvider in Drupal 8
- class \Drupal\KernelTests\RouteProvider implements \Symfony\Cmf\Component\Routing\PagedRouteProviderInterface, PreloadableRouteProviderInterface uses DependencySerializationTrait
- class \Drupal\simpletest\RouteProvider
- class \Drupal\simpletest\RouteProvider