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