code: func NewHandler(caBundleFile, intBundleFile string) (http.Handler, error) {
  	var err error
  
  	b := new(Handler)
  	if b.bundler, err = bundler.NewBundler(caBundleFile, intBundleFile); err != nil {
  		return nil, err
  	}
  
  	log.Info("bundler API ready")
  	return api.HTTPHandler{Handler: b, Methods: []string{"POST"}}, nil
  }
docs: // NewHandler creates a new bundler that uses the root bundle and
  // intermediate bundle in the trust chain.