ConfigEntityStorageInterface

class \Drupal\Core\Config\Entity\ConfigEntityStorage implements \Drupal\Core\Config\Entity\ConfigEntityStorageInterface, \Drupal\Core\Config\Entity\ImportableEntityStorageInterface extends \Drupal\Core\Entity\EntityStorageBase
class \Drupal\Core\Field\BaseFieldOverrideStorage extends \Drupal\Core\Field\FieldConfigStorageBase
class \Drupal\Core\Field\FieldConfigStorageBase extends \Drupal\Core\Config\Entity\ConfigEntityStorage

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