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# allowedContentTypes

The types of data that are accepted as a valid response for the requested resource.

```
var allowedContentTypes: [String]? { get }
```

## Discussion

This property contains an array of file format UTIs. When `allowedContentTypes` is non-nil, the value of [`contentType`](/documentation/AVFoundation/AVAssetResourceLoadingContentInformationRequest/contentType) must be set to a value contained in `allowedContentTypes` or `nil`.

---

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