uuid.go
func MustParse(s string) UUID {
	uuid, err := Parse(s)
	if err != nil {
		panic(`uuid: Parse(` + s + `): ` + err.Error())
	}
	return uuid
}
func MustParse(s string) UUID {
	uuid, err := Parse(s)
	if err != nil {
		panic(`uuid: Parse(` + s + `): ` + err.Error())
	}
	return uuid
}
// MustParse is like Parse but panics if the string cannot be parsed.
// It simplifies safe initialization of global variables holding compiled UUIDs.