provider/azure.go
func formatAzureDNSName(recordName, zoneName string) string {
	if recordName == "@" {
		return zoneName
	}
	return fmt.Sprintf("%s.%s", recordName, zoneName)
}
func formatAzureDNSName(recordName, zoneName string) string {
	if recordName == "@" {
		return zoneName
	}
	return fmt.Sprintf("%s.%s", recordName, zoneName)
}
// Helper function (shared with test code)