namespace AppKit
{
    [Protocol(Name = "NSCollectionViewDataSource", WrapperType = typeof(NSCollectionViewDataSourceWrapper))]
    [ProtocolMember(IsProperty = false, IsRequired = true, IsStatic = false, Name = "GetNumberofItems", ParameterByRef = new[] { false, false }, ParameterType = new[] { typeof(NSCollectionView), typeof(nint) }, ReturnType = typeof(nint), Selector = "collectionView:numberOfItemsInSection:")]
    [ProtocolMember(IsProperty = false, IsRequired = true, IsStatic = false, Name = "GetItem", ParameterByRef = new[] { false, false }, ParameterType = new[] { typeof(NSCollectionView), typeof(NSIndexPath) }, ReturnType = typeof(NSCollectionViewItem), Selector = "collectionView:itemForRepresentedObjectAtIndexPath:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "GetNumberOfSections", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(NSCollectionView) }, ReturnType = typeof(nint), Selector = "numberOfSectionsInCollectionView:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "GetView", ParameterByRef = new[] { false, false, false }, ParameterType = new[] { typeof(NSCollectionView), typeof(NSString), typeof(NSIndexPath) }, ReturnType = typeof(NSView), Selector = "collectionView:viewForSupplementaryElementOfKind:atIndexPath:")]
    public interface INSCollectionViewDataSource : INativeObject, IDisposable
    {
        [BindingImpl(BindingImplOptions.GeneratedCode | BindingImplOptions.Optimizable)]
        [Export("collectionView:numberOfItemsInSection:")]
        [Introduced(PlatformName.MacOSX, 10, 11, PlatformArchitecture.All, null)]
        [Introduced(PlatformName.MacOSX, 10, 11, PlatformArchitecture.All, null)]
        [Preserve(Conditional = true)]
        nint GetNumberofItems(NSCollectionView! collectionView, nint section);
    }
}