namespace AppKit
{
    [Model]
    [Protocol]
    [Register("NSOpenSavePanelDelegate", false)]
    public class NSOpenSavePanelDelegate : NSObject, INSOpenSavePanelDelegate, INativeObject, IDisposable
    {
        [BindingImpl(BindingImplOptions.GeneratedCode | BindingImplOptions.Optimizable)]
        [Export("panel:willExpand:")]
        public virtual void WillExpand(NSSavePanel! panel, bool expanding);
    }
}