code: func (s *RegistrarService) CheckDomain(accountID string, domainName string) (*domainCheckResponse, error) {
  	path := versioned(fmt.Sprintf("/%v/registrar/domains/%v/check", accountID, domainName))
  	checkResponse := &domainCheckResponse{}
  
  	resp, err := s.client.get(path, checkResponse)
  	if err != nil {
  		return nil, err
  	}
  
  	checkResponse.HttpResponse = resp
  	return checkResponse, nil
  }
docs: // CheckDomain checks a domain name.
  //
  // See https://developer.dnsimple.com/v2/registrar/#check