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# requestMetadata()

Requests metadata for the item.

```
func requestMetadata()
```

## Discussion

If metadata for the item is not readily available, accessing this property requests metadata from the camera, then notifies the delegate by calling [`cameraDevice(_:didReceiveMetadata:for:error:)`](/documentation/ImageCaptureCore/ICCameraDeviceDelegate/cameraDevice(_:didReceiveMetadata:for:error:)).

Execution of the delegate callback occurs on the main thread.

---

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