AccountInterface

class \Drupal\Core\Session\AccountProxy extends \Drupal\Core\Session\AccountProxyInterface uses \Drupal\Core\DependencyInjection\DependencySerializationTrait
class \Drupal\Core\Session\AnonymousUserSession implements \Drupal\Core\Session\UserSession
class \Drupal\Core\Session\UserSession extends \Drupal\Core\Session\AccountInterface
class \Drupal\entity_test_bundle_class\Entity\EntityTestUserClass implements \Drupal\user\Entity\User
class \Drupal\user\Entity\User extends \Drupal\user\UserInterface uses \Drupal\Core\Entity\EntityChangedTrait implements \Drupal\Core\Entity\ContentEntityBase

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