Calling this method will trigger a request for layout information from the UICollectionView.CollectionViewLayout. If the result includes visible elements, those elements will be populated via the UICollectionView.DataSource and animated onto the screen.

If this method is called within the Foundation.NSAction delegate passed to the UICollectionView.PerformBatchUpdates method, the animation will occur simultaneously with those of other manipulations of the UIKit.UICollectionView.