public void ShouldGenerateDifferentHashcode()
        {
            var dateTime1 = new CypherDateTimeWithZoneId(1947, 12, 17, 15, 12, 01, 789000000, "Europe/Rome");
            var dateTime2 = new CypherDateTimeWithZoneId(new DateTime(1947, 12, 17, 15, 12, 01, 790), "Europe/Rome");
            var dateTime3 = new CypherDateTimeWithZoneId(-695555279, 789000200, "Europe/Rome");

            dateTime1.GetHashCode().Should().NotBe(dateTime2.GetHashCode()).And.NotBe(dateTime3.GetHashCode());
        }
        public void ShouldGenerateSameHashcode()
        {
            var dateTime1 = new CypherDateTimeWithZoneId(1947, 12, 17, 15, 12, 01, 789000000, "Europe/Rome");
            var dateTime2 = new CypherDateTimeWithZoneId(new DateTime(1947, 12, 17, 15, 12, 01, 789), "Europe/Rome");
            var dateTime3 = new CypherDateTimeWithZoneId(-695551679, 789000000, "Europe/Rome");

            dateTime1.GetHashCode().Should().Be(dateTime2.GetHashCode()).And.Be(dateTime3.GetHashCode());
        }