AccessPolicyInterface

class \Drupal\Core\Installer\InstallerAccessPolicy extends \Drupal\Core\Session\AccessPolicyBase
class \Drupal\Core\Session\AccessPolicyBase implements \Drupal\Core\Session\AccessPolicyInterface
class \Drupal\Core\Session\SuperUserAccessPolicy extends \Drupal\Core\Session\AccessPolicyBase
class \Drupal\Core\Session\UserRolesAccessPolicy extends \Drupal\Core\Session\AccessPolicyBase