ModelBuilder.DateTimeValueGenerator.GenerateValue C# (CSharp) Method

        protected override object GenerateValue(Type type, string referenceName, LinkedList<object> buildChain)
        {
            var generateType = type;

            if (generateType.IsNullable())
            {
                // Allow for a 10% the chance that this might be null
                var range = Generator.NextValue(0, 100);

                if (range < 10)
                {
                    return null;
                }

                // Hijack the type to generator so we can continue with the normal code pointed at the correct type to generate
                generateType = type.GetGenericArguments()[0];
            }

            if (generateType == typeof(TimeZoneInfo))
            {
                var zones = TimeZoneInfo.GetSystemTimeZones();
                var zoneIndex = Generator.NextValue(0, zones.Count - 1);

                return zones[zoneIndex];
            }

            var tenYears = TimeSpan.FromDays(3650);
            var shift = Generator.NextValue(0, tenYears.TotalSeconds);

            if (generateType == typeof(DateTime))
            {
                return DateTime.UtcNow.AddSeconds(shift);
            }

            if (generateType == typeof(TimeSpan))
            {
                return TimeSpan.FromSeconds(shift);
            }

            return DateTimeOffset.UtcNow.AddSeconds(shift);
        }
    }