# Package org.keycloak.storage.user

- Interface Summary
  Interface | Description
  --- | ---
  ImportedUserValidation | If your UserStorageProvider is importing users into local storage, you can validate that import whenever the user is queried from local storage.
  ImportSynchronization |
  UserBulkUpdateProvider |
  UserLookupProvider | Optional capability interface implemented by UserStorageProviders.
  UserQueryProvider | Optional capability interface implemented by UserStorageProviders.
  UserQueryProvider.Streams | The `UserQueryProvider.Streams` interface makes all collection-based methods in `UserQueryProvider` default by providing implementations that delegate to the `Stream`-based variants instead of the other way around.
  UserRegistrationProvider | Optional capability interface implemented by UserStorageProviders.

- Class Summary
  Class | Description
  --- | ---
  SynchronizationResult |

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