---
title: domainVersion
framework: fileprovider
role: symbol
role_heading: Instance Property
path: fileprovider/nsfileproviderrequest/domainversion
---

# domainVersion

The version of the domain for the request.

## Declaration

```swift
var domainVersion: NSFileProviderDomainVersion? { get }
```

## Discussion

Discussion If the file provider extension doesn’t implement the NSFileProviderDomainState protocol, this property is nil.

## See Also

### Accessing Application Information

- [requestingExecutable](fileprovider/nsfileproviderrequest/requestingexecutable.md)
- [isFileViewerRequest](fileprovider/nsfileproviderrequest/isfileviewerrequest.md)
- [isSystemRequest](fileprovider/nsfileproviderrequest/issystemrequest.md)