---
title: kColorSyncSigAbstractClass
framework: colorsync
role: symbol
role_heading: Global Variable
platforms: [iOS 16.0+, iPadOS 16.0+, Mac Catalyst 13.0+, macOS 10.13+, tvOS 16.0+, visionOS 1.0+, watchOS 9.0+]
path: colorsync/kcolorsyncsigabstractclass
---

# kColorSyncSigAbstractClass

The signature identifying an abstract profile class.

## Declaration

```swift
var kColorSyncSigAbstractClass: Unmanaged<CFString>!
```

## See Also

### Identifying profile classes

- [kColorSyncSigColorSpaceClass](colorsync/kcolorsyncsigcolorspaceclass.md)
- [kColorSyncSigDisplayClass](colorsync/kcolorsyncsigdisplayclass.md)
- [kColorSyncSigInputClass](colorsync/kcolorsyncsiginputclass.md)
- [kColorSyncSigLinkClass](colorsync/kcolorsyncsiglinkclass.md)
- [kColorSyncSigNamedColorClass](colorsync/kcolorsyncsignamedcolorclass.md)
- [kColorSyncSigOutputClass](colorsync/kcolorsyncsigoutputclass.md)