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# sessionStarted(_:)

Notifies the handler when its feature session starts.

```
func sessionStarted(_ session: Self.Session)
```

## Parameters

`session`

The session that starts. Hold a weak reference to this parameter because the [`makeFeatureSession(_:)`](/documentation/AccessoryTransportExtension/AccessoryTransportSession/makeFeatureSession(_:)) caller owns it.

## Discussion

The system calls this method once the session activates and your app enrolls the feature.

---

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