code: func (mounter *SafeFormatAndMount) diskLooksUnformatted(disk string) (bool, error) {
  	args := []string{"-nd", "-o", "FSTYPE", disk}
  	cmd := mounter.Runner.Command("lsblk", args...)
  	dataOut, err := cmd.CombinedOutput()
  	output := strings.TrimSpace(string(dataOut))
  
  	// TODO (#13212): check if this disk has partitions and return false, and
  	// an error if so.
  
  	if err != nil {
  		return false, err
  	}
  
  	return output == "", nil
  }
docs: // diskLooksUnformatted uses 'lsblk' to see if the given disk is unformated