---
title: "importResources(from:importRequest:progress:)"
framework: appmigrationkit
role: symbol
role_heading: Instance Method
path: "appmigrationkit/appmigrationtester/appimportcontroller/importresources(from:importrequest:progress:)"
---

# importResources(from:importRequest:progress:)

Tells the migration extension to begin importing transportable resources into the app extension.

## Declaration

```swift
final func importResources(from extractedResourceURL: URL, importRequest: ResourcesImportRequest? = nil, progress: Progress? = nil) async throws
```

## Parameters

- `extractedResourceURL`: A file URL pointing to a directory that contains the resources to import.
- `importRequest`: An optional migration request instance to pass to the app extension’s import method. If this value is nil, the framework uses a default request. This value defaults to nil.
- `progress`: An optional doc://com.apple.documentation/documentation/Foundation/Progress object the extension uses to report its progress back to the unit test. This value defaults to nil.

## Discussion

Discussion Clean your app state before starting an import test, since the app extension runs on a clean app state. In particular, remove any files you previously wrote to the app container and ensure it’s empty. This simulates how the extension normally runs during a migration.