code: func hostStorageSystemFromHostSystemID(client *govmomi.Client, hsID string) (*object.HostStorageSystem, error) {
  	hs, err := hostsystem.FromID(client, hsID)
  	if err != nil {
  		return nil, err
  	}
  	ctx, cancel := context.WithTimeout(context.Background(), defaultAPITimeout)
  	defer cancel()
  	return hs.ConfigManager().StorageSystem(ctx)
  }
docs: // hostStorageSystemFromHostSystemID locates a HostStorageSystem from a
  // specified HostSystem managed object ID.