code: func (s *RegistrarService) TransferDomainOut(accountID string, domainName string) (*domainTransferOutResponse, error) {
  	path := versioned(fmt.Sprintf("/%v/registrar/domains/%v/authorize_transfer_out", accountID, domainName))
  	transferResponse := &domainTransferOutResponse{}
  
  	resp, err := s.client.post(path, nil, nil)
  	if err != nil {
  		return nil, err
  	}
  
  	transferResponse.HttpResponse = resp
  	return transferResponse, nil
  }
docs: // Transfer out a domain name.
  //
  // See https://developer.dnsimple.com/v2/registrar/#transfer-out