return schema.GroupVersionKind{}, false
}

// Identifier implements GroupVersioner interface.
func (v multiGroupVersioner) Identifier() string {
	groupKinds := make([]string, 0, len(v.acceptedGroupKinds))
	for _, gk := range v.acceptedGroupKinds {
		groupKinds = append(groupKinds, gk.String())
	}
	result := map[string]string{
		"name":     "multi",
		"target":   v.target.String(),
		"accepted": strings.Join(groupKinds, ","),