public void Can_Convert_Iana_Zones_To_Rails_Zones()
        {
            var errors    = 0;
            var ianaZones = TZConvert.KnownIanaTimeZoneNames;

            foreach (var ianaZone in ianaZones.Except(UnmappableZones))
            {
                try
                {
                    var railsZones = TZConvert.IanaToRails(ianaZone);
                    Assert.NotNull(railsZones);
                }
                catch (InvalidTimeZoneException e)
                {
                    errors++;
                    _output.WriteLine(e.Message);
                }
            }

            Assert.Equal(0, errors);
        }