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# objectWillChange

A publisher that informs subscribers of changes to the image.

```
final let objectWillChange: PassthroughSubject<Void, Never>
```

## Discussion

The renderer’s
<doc://com.apple.documentation/documentation/Combine/ObservableObject/ObjectWillChangePublisher>
publishes `Void` elements.
Subscribers should interpret any event as indicating that the contents
of the image may have changed.

---

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