AuthenticationProviderInterface

class \Drupal\Core\Authentication\AuthenticationManager implements \Drupal\Core\Authentication\AuthenticationProviderInterface, \Drupal\Core\Authentication\AuthenticationProviderFilterInterface, \Drupal\Core\Authentication\AuthenticationProviderChallengeInterface
class \Drupal\Tests\Core\Authentication\TestAuthenticationProvider implements \Drupal\Core\Authentication\AuthenticationProviderInterface
class \Drupal\basic_auth\Authentication\Provider\BasicAuth implements \Drupal\Core\Authentication\AuthenticationProviderInterface, \Drupal\Core\Authentication\AuthenticationProviderChallengeInterface uses \Drupal\Core\DependencyInjection\DeprecatedServicePropertyTrait
class \Drupal\early_translation_test\Auth implements \Drupal\Core\Authentication\AuthenticationProviderInterface
class \Drupal\rest_test\Authentication\Provider\TestAuth implements \Drupal\Core\Authentication\AuthenticationProviderInterface
class \Drupal\rest_test\Authentication\Provider\TestAuthGlobal implements \Drupal\Core\Authentication\AuthenticationProviderInterface
class \Drupal\user\Authentication\Provider\Cookie implements \Drupal\Core\Authentication\AuthenticationProviderInterface

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