namespace AppKit
{
    [Model]
    [Protocol]
    [Register("NSCollectionViewDelegate", false)]
    public class NSCollectionViewDelegate : NSObject, INSCollectionViewDelegate, INativeObject, IDisposable
    {
        [BindingImpl(BindingImplOptions.GeneratedCode | BindingImplOptions.Optimizable)]
        [Export("collectionView:validateDrop:proposedIndexPath:dropOperation:")]
        [Introduced(PlatformName.MacOSX, 10, 11, PlatformArchitecture.All, null)]
        public virtual NSDragOperation ValidateDropOperation(NSCollectionView! collectionView, NSDraggingInfo! draggingInfo, ref NSIndexPath! proposedDropIndexPath, ref NSCollectionViewDropOperation proposedDropOperation);
    }
}