namespace AppKit
{
    [Model]
    [Protocol]
    [Register("NSOutlineViewDelegate", false)]
    public class NSOutlineViewDelegate : NSObject, INSOutlineViewDelegate, INativeObject, IDisposable
    {
        [BindingImpl(BindingImplOptions.GeneratedCode | BindingImplOptions.Optimizable)]
        [Export("outlineView:isGroupItem:")]
        public virtual bool IsGroupItem(NSOutlineView! outlineView, NSObject! item);
    }
}