Requests a list of languages recognized by the specified revision.
- iOS 13.0+
- macOS 10.15+
- Mac Catalyst 13.0+
- tvOS 13.0+
The revision of the text recognition algorithm for the Vision framework to use.
An error that contains information about failed language support, or
nilif no error occurred.
An array of supported languages, listed as ISO language codes.
A language supported in one recognition level may not be available in another recognition level.