private async Task DeleteInstance(DBInstance instance) { _logger.Info("Deleting old instance."); string finalSnapshotID = $"beta-final-snap-{SystemClock.Instance.GetToday().ToISOString()}-{Guid.NewGuid().ToString()[0]}"; var deleteRequest = new DeleteDBInstanceRequest() { DBInstanceIdentifier = instance.DBInstanceIdentifier, FinalDBSnapshotIdentifier = finalSnapshotID }; await _rdsClient.DeleteDBInstanceAsync(deleteRequest); }