arn.Partition,
			arn.Service,
			arn.Region,
			"", // account-id is always empty in this implementation
			arn.ResourceType + "/" + arn.ResourceID,
		},
		":",
	)
}

// Parse - parses an ARN string into a type.
func Parse(arnStr string) (arn ARN, err error) {
	ps := strings.Split(arnStr, ":")
	if len(ps) != 6 || ps[0] != string(arnPrefixArn) {
		err = errors.New("invalid ARN string format")
		return
	}