MongoDB.Driver.OidGenerator.GenerateTime C# (CSharp) Méthode

        private int GenerateTime()
        {
            DateTime now = DateTime.UtcNow;
            //DateTime nowtime = new DateTime(epoch.Year, epoch.Month, epoch.Day, now.Hour, now.Minute, now.Second, now.Millisecond);
            TimeSpan diff = now - epoch;
            return Convert.ToInt32(Math.Floor(diff.TotalSeconds));
        }