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# NSFileProviderItemIdentifier

A unique identifier for an item managed by the File Provider extension.

```
struct NSFileProviderItemIdentifier
```

## Topics

### Constants

[`rootContainer`](/documentation/FileProvider/NSFileProviderItemIdentifier/rootContainer)

The persistent identifier for the root directory of the file provider’s shared file hierarchy.

[`workingSet`](/documentation/FileProvider/NSFileProviderItemIdentifier/workingSet)

The persistent identifier representing the working set of documents and directories.

[`trashContainer`](/documentation/FileProvider/NSFileProviderItemIdentifier/trashContainer)

The persistent identifier for the parent of all trashed items.

### Initializers

[`init(_:)`](/documentation/FileProvider/NSFileProviderItemIdentifier/init(_:))

Returns a newly instantiated persistent identifier.

[`init(rawValue:)`](/documentation/FileProvider/NSFileProviderItemIdentifier/init(rawValue:))

Returns a newly instantiated persistent identifier.


---

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