# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2017-01-04 15:55:09 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/816674337499426816) In reply to: [@lukeredpath](http://twitter.com/lukeredpath/status/816673603714478080) @lukeredpath @pilky One example. Pass an NSManagedObject without the overhead of a CoreData setup. Another, monitor calls to object's method