UICollectionView Insertion animation curve

问题

Is it possible to adjust the animation curve for inserting indexPaths into a collectionview?

I am currently animating the insertion of items using this methods:

-initialLayoutAttributesForAppearingItemAtIndexPath:

However, I'd like the change the animation curve with which the layout animates items. Is this possible?

来源：https://stackoverflow.com/questions/26662779/uicollectionview-insertion-animation-curve