public void ToLocalTime()
        {
            var timeOnly = new TimeOnly(12, 34, 56, 300).Add(TimeSpan.FromTicks(4567));
            var expected = new LocalTime(12, 34, 56, 300).PlusTicks(4567);
            var actual   = timeOnly.ToLocalTime();

            Assert.AreEqual(expected, actual);
        }