code: func EnabledVersions() []unversioned.GroupVersion {
  	ret := []unversioned.GroupVersion{}
  	for _, groupMeta := range groupMetaMap {
  		ret = append(ret, groupMeta.GroupVersions...)
  	}
  	return ret
  }
docs: // EnabledVersions returns all enabled versions.  Groups are randomly ordered, but versions within groups
  // are priority order from best to worst