code: func (s *VanityNameServersService) EnableVanityNameServers(accountID string, domainIdentifier string) (*vanityNameServerResponse, error) {
  	path := versioned(vanityNameServerPath(accountID, domainIdentifier))
  	vanityNameServerResponse := &vanityNameServerResponse{}
  
  	resp, err := s.client.put(path, nil, vanityNameServerResponse)
  	if err != nil {
  		return nil, err
  	}
  
  	vanityNameServerResponse.HttpResponse = resp
  	return vanityNameServerResponse, nil
  }
docs: // EnableVanityNameServers Vanity Name Servers for the given domain
  //
  // See https://developer.dnsimple.com/v2/vanity/#enable