code: func randomAppsURL(servers []string) string {
  	// TODO: If possible update server list from Marathon at some point.
  	server := servers[rand.Intn(len(servers))]
  	return fmt.Sprintf("%s%s", server, appListPath)
  }
docs: // randomAppsURL randomly selects a server from an array and creates
  // an URL pointing to the app list.