// instead, which does not copy.
func (ls Set) AsSelectorPreValidated() Selector {
	return SelectorFromValidatedSet(ls)
}

// FormatLabels converts label map into plain string
func FormatLabels(labelMap map[string]string) string {
	l := Set(labelMap).String()
	if l == "" {
		l = "<none>"
	}
	return l
}