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# withObservationTracking(options:_:onChange:)

```
func withObservationTracking<Result, Failure>(options: ObservationTracking.Options, _ apply: () throws(Failure) -> Result, onChange: @escaping @Sendable (borrowing ObservationTracking.Event) -> Void) throws(Failure) -> Result where Failure : Error, Result : ~Copyable
```

---

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