namespace UIKit
{
    [Introduced(PlatformName.TvOS, 13, 0, PlatformArchitecture.All, null)]
    [Introduced(PlatformName.iOS, 13, 0, PlatformArchitecture.All, null)]
    [Register("UICollectionViewDiffableDataSource", true)]
    [Unavailable(PlatformName.WatchOS, PlatformArchitecture.All, null)]
    public class UICollectionViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType> : NSObject, INativeObject, IDisposable, IUICollectionViewDataSource
        where SectionIdentifierType, NSObject!
        where ItemIdentifierType, NSObject!
    {
        [BindingImpl(BindingImplOptions.GeneratedCode | BindingImplOptions.Optimizable)]
        [Export("collectionView:numberOfItemsInSection:")]
        public virtual nint GetItemsCount(UICollectionView! collectionView, nint section);
    }
}