namespace System
{
    public readonly struct TimeOnly : IComparable, IComparable<TimeOnly>, IComparisonOperators<TimeOnly, TimeOnly>, IEqualityOperators<TimeOnly, TimeOnly>, IEquatable<TimeOnly>, IFormattable, IMinMaxValue<TimeOnly>, IParseable<TimeOnly>, ISpanFormattable, ISpanParseable<TimeOnly>, ISubtractionOperators<TimeOnly, TimeOnly, TimeSpan>
    {
        public TimeOnly Add(TimeSpan value);
    }
}