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# init(enabledStateReportingDomains:)

Creates a new `MetricManager` instance with state reporting domains enabled for metrics aggregation.

```
init(enabledStateReportingDomains: Set<StateReportingDomain>)
```

## Discussion

Pass a set of [`StateReportingDomain`](/documentation/MetricKit/StateReportingDomain) values to enable state-contextualized metrics. When state reporting is enabled, the [`stateEntries`](/documentation/MetricKit/MetricReport/stateEntries) property of each [`MetricReport`](/documentation/MetricKit/MetricReport) is populated with metric values segmented by each recorded app state.

```swift
let manager = MetricManager(
    enabledStateReportingDomains: ["com.example.app.session"]
)
```

Use [`init()`](/documentation/MetricKit/MetricManager/init()) if you don’t need per-state metrics.

---

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