/// <summary>
/// Adds a timespan to this instance of DateTime
/// </summary>
/// <param name="timeSpan"></param>
/// <returns></returns>
public DateTime Add(TimeSpan timeSpan)
{
DateTime result = new DateTime(Universal.Add(timeSpan.ToSystemTimeSpan()), m_nanosecond,
Type.TimeZone.UTC, true);
result = result.AddMicrosecondsInternal(timeSpan.Microseconds);
result = result.AddNanosecondsInternal(timeSpan.Nanoseconds);
return(result.ToTimeZone(TimeZone));
}
