namespace Foundation
{
    [Register("NSIndexSet", true)]
    public class NSIndexSet : NSObject, INSCoding, INSCopying, INSMutableCopying, INSSecureCoding, INativeObject, IEnumerable, IEnumerable<nuint>, IDisposable
    {
        [BindingImpl(BindingImplOptions.GeneratedCode | BindingImplOptions.Optimizable)]
        [Export("indexLessThanOrEqualToIndex:")]
        public virtual nuint IndexLessThanOrEqual(nuint index);
    }
}