// followed by `version` and finally defaulting to the literal value of `"latest"`.
func CanonicalService(labels map[string]string, workloadName string) (string, string) {
	return canonicalServiceName(labels, workloadName), canonicalServiceRevision(labels)
}

// lookupLabelValue returns the value of the first label in the supplied map that matches
// one of the supplied keys.
func lookupLabelValue(labels map[string]string, keys ...string) (string, bool) {