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# PHPhotoLibraryPersistentChangesObserver

```
protocol PHPhotoLibraryPersistentChangesObserver : NSObjectProtocol
```

## Topics

### Instance Methods

[`func photoLibraryPersistentChangesDidUpdate(PHPhotoLibrary)`](/documentation/Photos/PHPhotoLibraryPersistentChangesObserver/photoLibraryPersistentChangesDidUpdate(_:))

## Relationships

### Inherits From

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

---

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