code: func (api *API) DNSRecord(zoneID, recordID string) (DNSRecord, error) {
  	uri := "/zones/" + zoneID + "/dns_records/" + recordID
  	res, err := api.makeRequest("GET", uri, nil)
  	if err != nil {
  		return DNSRecord{}, errors.Wrap(err, errMakeRequestError)
  	}
  	var r DNSRecordResponse
  	err = json.Unmarshal(res, &r)
  	if err != nil {
  		return DNSRecord{}, errors.Wrap(err, errUnmarshalError)
  	}
  	return r.Result, nil
  }
docs: // DNSRecord returns a single DNS record for the given zone & record
  // identifiers.
  //
  // API reference: https://api.cloudflare.com/#dns-records-for-a-zone-dns-record-details