public string GenerateMachineName()
        {
            string name = GenerateName("i");

            // We always add them to the deletion list. We delete on a best effort basis anyway.
            MachinesToDelete.Add(name);
            return(name);
        }
        public string GenerateMachineName()
        {
            string name = $"i-{DateTime.UtcNow.ToString("yyyyMMdd-HHmmssfff", CultureInfo.InvariantCulture)}";

            // We always add them to the deletion list. We delete on a best effort basis anyway.
            MachinesToDelete.Add(name);
            return(name);
        }