namespace System
{
    public static class TupleExtensions
    {
        [EditorBrowsable(EditorBrowsableState.Never)]
        public static void Deconstruct<T1, T2, T3, T4, T5>(this Tuple<T1, T2, T3, T4, T5> value, out T1 item1, out T2 item2, out T3 item3, out T4 item4, out T5 item5);
    }
}