StorageManagerInterface

class \Drupal\Core\Config\ExportStorageManager implements \Drupal\Core\Config\StorageManagerInterface uses \Drupal\Core\Config\StorageCopyTrait
class \Drupal\KernelTests\Core\Config\Storage\ManagedStorageTest extends \Drupal\KernelTests\Core\Config\Storage\ConfigStorageTestBase implements \Drupal\Core\Config\StorageManagerInterface

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