code: func (api *API) VirtualDNS(virtualDNSID string) (*VirtualDNS, error) {
  	uri := "/user/virtual_dns/" + virtualDNSID
  	res, err := api.makeRequest("GET", uri, nil)
  	if err != nil {
  		return nil, errors.Wrap(err, errMakeRequestError)
  	}
  
  	response := &VirtualDNSResponse{}
  	err = json.Unmarshal(res, &response)
  	if err != nil {
  		return nil, errors.Wrap(err, errUnmarshalError)
  	}
  
  	return response.Result, nil
  }
docs: // VirtualDNS fetches a single virtual DNS cluster.
  //
  // API reference: https://api.cloudflare.com/#virtual-dns-users--get-a-virtual-dns-cluster