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  "documentType" : "symbol",
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# ResourcesArchiver

An object your app uses to archive resources during an export operation.

```
final class ResourcesArchiver
```

## Overview> Important: This class handles task cancellation automatically by throwing cancellation errors up the stack if the migration system cancels the export. Don’t catch the cancellation errors; doing so causes the system to kill the app extension.

## Topics

### Appending resources

[`func appendItem(at: URL, pathInArchive: String?) async throws`](/documentation/AppMigrationKit/ResourcesArchiver/appendItem(at:pathInArchive:))

Sends a file to the archiver for export.


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