code: func (v *KustomizeVisitor) Visit(fn VisitorFunc) error {
  	fSys := fs.MakeRealFS()
  	var out bytes.Buffer
  	err := kustomize.RunKustomizeBuild(&out, fSys, v.Path)
  	if err != nil {
  		return err
  	}
  	v.StreamVisitor.Reader = bytes.NewReader(out.Bytes())
  	return v.StreamVisitor.Visit(fn)
  }
docs: // Visit in a KustomizeVisitor gets the output of Kustomize build and save it in the Streamvisitor