ctx, cancel := context.WithTimeout(context.Background(), timeout)
			defer cancel()
			if generation == "" {
				w = getAndWatchResource(ctx, cliCtx) // setup version getter from kubernetes
			} else {
				w = withContext(ctx)
				w.Go(func(result chan string) error {
					result <- generation
					return nil
				})
			}
			// wait for all deployed versions to be contained in generations
			t := time.NewTicker(pollInterval)