pub unsafe extern "C-unwind" fn IOObjectCopySuperclassForClass(
classname: Option<&CFString>,
) -> Option<CFRetained<CFString>>Expand description
Return the superclass name of the given class.
This function uses the OSMetaClass system in the kernel to derive the name of the superclass of the class.
Parameter classname: The name of the class as a CFString.
Returns: 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.
ยงSafety
classname might not allow None.