namespace AppKit
{
    [Introduced(PlatformName.MacOSX, 10, 15, PlatformArchitecture.All, null)]
    [Register("NSCollectionViewDiffableDataSource", true)]
    public class NSCollectionViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType> : NSObject, INSCollectionViewDataSource, INativeObject, IDisposable
        where SectionIdentifierType, NSObject!
        where ItemIdentifierType, NSObject!
    {
        [BindingImpl(BindingImplOptions.GeneratedCode | BindingImplOptions.Optimizable)]
        [Export("collectionView:numberOfItemsInSection:")]
        [Introduced(PlatformName.MacOSX, 10, 11, PlatformArchitecture.All, null)]
        public virtual nint GetNumberofItems(NSCollectionView! collectionView, nint section);
    }
}