code: func prettyPrint(item corev1.ResourceList) string {
  	parts := []string{}
  	keys := []string{}
  	for key := range item {
  		keys = append(keys, string(key))
  	}
  	sort.Strings(keys)
  	for _, key := range keys {
  		value := item[corev1.ResourceName(key)]
  		constraint := key + "=" + value.String()
  		parts = append(parts, constraint)
  	}
  	return strings.Join(parts, ",")
  }
docs: // prettyPrint formats a resource list for usage in errors
  // it outputs resources sorted in increasing order