---
title: supportedRevisions
framework: vision
role: symbol
role_heading: Type Property
path: vision/vnrequest/supportedrevisions
---

# supportedRevisions

The collection of currently-supported algorithm versions for the class of request.

## Declaration

```swift
class var supportedRevisions: IndexSet { get }
```

## Discussion

Discussion This method allows clients to inspect at runtime what capabilities are available for each class of VNRequest in the Vision framework.

## See Also

### Determining the Revision

- [VNRequestRevisionProviding](vision/vnrequestrevisionproviding.md)
- [currentRevision](vision/vnrequest/currentrevision.md)
- [defaultRevision](vision/vnrequest/defaultrevision.md)