Return the superclass name of the given class.
- macOS 10.4+
- Mac Catalyst 13.0+
The name of the class as a CFString.
The resulting CFStringRef. This should be released by the caller. If there is no superclass, or a valid class name is not passed in, then NULL is returned.
This function uses the OSMetaClass system in the kernel to derive the name of the superclass of the class.