allPods map[resource.Namespace][]corev1.Pod,
) error {
	outputCount := 0

	w := new(tabwriter.Writer).Init(writer, 0, 8, 1, ' ', 0)
	for _, namespace := range namespaces {
		revision := getInjectedRevision(&namespace, hooks)
		podCount := podCountByRevision(allPods[resource.Namespace(namespace.Name)], revision)
		if len(podCount) == 0 {

	listeners, err := c.retrieveSortedListenerSlice()
	if err != nil {
		return nil, nil, err
	}
	w := new(tabwriter.Writer).Init(c.Stdout, 0, 8, 1, ' ', 0)
	return w, listeners, nil
}

func (c *ConfigWriter) retrieveSortedListenerSlice() ([]*listener.Listener, error) {
	if c.configDump == nil {
		return nil, fmt.Errorf("config writer has not been primed")
	}

		return printJSONYAML(writer, tags, outputFormat)
	case util.TableFormat:
	default:
		return fmt.Errorf("unknown format: %s", outputFormat)
	}
	w := new(tabwriter.Writer).Init(writer, 0, 8, 1, ' ', 0)
	fmt.Fprintln(w, "TAG\tREVISION\tNAMESPACES")
	for _, t := range tags {
		fmt.Fprintf(w, "%s\t%s\t%s\n", t.Tag, t.Revision, strings.Join(t.Namespaces, ","))
	}

	return w.Flush()
}