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# experienceController(_:didChangeTransitionContext:)

Tells the delegate when the transition context changes during a transition.

```
@MainActor func experienceController(_ controller: AVExperienceController, didChangeTransitionContext context: AVExperienceController.TransitionContext)
```

## Parameters

`controller`

The experience controller.

`context`

An structure that contains information about the transition.

## Discussion

Implement this method to track the transition between experiences.

---

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