code: func parseZoned(zonedString string, kind v1.AzureDataDiskKind) (bool, error) {
  	if zonedString == "" {
  		return kind == v1.AzureManagedDisk, nil
  	}
  
  	zoned, err := strconv.ParseBool(zonedString)
  	if err != nil {
  		return false, fmt.Errorf("failed to parse 'zoned': %v", err)
  	}
  
  	if zoned && kind != v1.AzureManagedDisk {
  		return false, fmt.Errorf("zoned is only supported by managed disks")
  	}
  
  	return zoned, nil
  }
docs: // parseZoned parsed 'zoned' for storage class. If zoned is not specified (empty string),
  // then it defaults to true for managed disks.