public static TimeSpan GetTravelTime(this Journey journey)
{
DateTime utcDeptDateTime = journey.GetUTCDeptDateTime();
DateTime utcArrvDateTime = journey.GetUTCArrvDateTime();
if (utcDeptDateTime != default(DateTime) && utcArrvDateTime != default(DateTime))
{
return(utcArrvDateTime.Subtract(utcDeptDateTime));
}
return(TimeSpan.Zero);
}