code: func (g *getManifestCmd) run() error {
  	res, err := g.client.ReleaseContent(g.release, helm.ContentReleaseVersion(g.version))
  	if err != nil {
  		return prettyError(err)
  	}
  	fmt.Fprintln(g.out, res.Release.Manifest)
  	return nil
  }
docs: // getManifest implements 'helm get manifest'