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# downloadTaskResumeData

An opaque data object used to resume a failed download task.

```
var downloadTaskResumeData: Data? { get }
```

## Discussion

Pass this object to [`downloadTask(withResumeData:)`](/documentation/Foundation/URLSession/downloadTask(withResumeData:)) or [`downloadTask(withResumeData:completionHandler:)`](/documentation/Foundation/URLSession/downloadTask(withResumeData:completionHandler:)) to create a new download task that can attempt to resume the failed download.

---

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