StorageManagerInterface

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

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