It could be changed to `KWObjCTypeIsBlock`; I don't think we want `KWObjCTypeIsObject` though, as we already know that is the case from the higher statement.

It might be more obvious just to make sure it isn't `[KWAny any]` rather than being potentially unnecessarily clever and catching anything that isn't conforming to `NSCopying` (it should really be a block if it isn't [KWAny any]).  That would also negate the need for a comment.  Thoughts?