code: func (ca *CustomArgs) GroupVersionPackages() map[types.GroupVersion]string {
  	res := map[types.GroupVersion]string{}
  	for _, pkg := range ca.Groups {
  		for _, v := range pkg.Versions {
  			res[types.GroupVersion{Group: pkg.Group, Version: v.Version}] = v.Package
  		}
  	}
  	return res
  }
docs: // GroupVersionPackages returns a map from GroupVersion to the package with the types.go.