I set the cell size in
collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath).
However, in other callbacks of the collectionView I see that the flowLayout.itemSize is not the size I set, despite the size being correctly rendered on screen. Why is this not the case?
Separate but related-how/where do I set the flowLayout.minimumInteritemSpacing?