code: func APIServiceNameToGroupVersion(apiServiceName string) schema.GroupVersion {
  	tokens := strings.SplitN(apiServiceName, ".", 2)
  	return schema.GroupVersion{Group: tokens[1], Version: tokens[0]}
  }
docs: // APIServiceNameToGroupVersion returns the GroupVersion for a given apiServiceName.  The name
  // must be valid, but any object you get back from an informer will be valid.