RouteBuilderInterface

class \Drupal\Core\Installer\InstallerRouteBuilder extends \Drupal\Core\Routing\RouteBuilder
class \Drupal\Core\ProxyClass\Routing\RouteBuilder implements \Drupal\Core\Routing\RouteBuilderInterface, \Drupal\Core\DestructableInterface uses \Drupal\Core\DependencyInjection\DependencySerializationTrait
class \Drupal\Core\Routing\RouteBuilder implements \Drupal\Core\Routing\RouteBuilderInterface, \Drupal\Core\DestructableInterface
class \Drupal\Tests\Core\Routing\TestRouteBuilder extends \Drupal\Core\Routing\RouteBuilder

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.