Controller class for users.
This extends the Drupal\Core\Entity\Sql\SqlContentEntityStorage class, adding required special handling for user objects.
Hierarchy
class \Drupal\Core\Entity\EntityHandlerBase uses DependencySerializationTrait, StringTranslationTraitclass \Drupal\Core\Entity\EntityStorageBase implements EntityHandlerInterface, EntityStorageInterfaceclass \Drupal\Core\Entity\ContentEntityStorageBase implements ContentEntityStorageInterface, DynamicallyFieldableEntityStorageInterfacecl