code: func datastoreRootPathFromHostSystemID(client *govmomi.Client, hsID string) (string, error) {
  	hs, err := hostsystem.FromID(client, hsID)
  	if err != nil {
  		return "", err
  	}
  	return RootPathParticleHost.NewRootFromPath(hs.InventoryPath, RootPathParticleDatastore)
  }
docs: // datastoreRootPathFromHostSystemID returns the root datastore folder path
  // for a specific host system ID.