Actually, even with this, you won't be able to check `[foo isKindOfClass:[NSParagraphStyle class]]` on iOS 5, because `[NSParagraphStyle class]` will return nil. This is true even though we're dynamically registering the NSParagraphStyle class, the compiled reference is swapped out for a reference to Nil when the application is first loaded, before any `+load` methods are run.

But it *would* work to do `[foo isKindOfClass:[CKParagraphStyle class]]`. I'm not sure how useful that would be, though, since this is basically a no-op class just intended to make things not crash. But regardless, that would be more accurate for this comment.