当新数据插入核心数据存储时，如何将UICollectionView始终保持在底部

I have a UICollectionView that uses an NSFetchedResultsController and I would like to have the view always scrolled at the bottom as new entries are inserted into the persistent store. How would I do this? I have implemented the NSFetchedResultsController delegate methods and viewing the data in the collection works nice but I'm not sure how to implement this additional requirement. Suggestions?I have a UICollectionView that uses an NSFetche