code: func (api *API) GetLogpushOwnershipChallenge(zoneID, destinationConf string) (*LogpushGetOwnershipChallenge, error) {
  	uri := "/zones/" + zoneID + "/logpush/ownership"
  	res, err := api.makeRequest("POST", uri, LogpushGetOwnershipChallengeRequest{
  		DestinationConf: destinationConf,
  	})
  	if err != nil {
  		return nil, errors.Wrap(err, errMakeRequestError)
  	}
  	var r LogpushGetOwnershipChallengeResponse
  	err = json.Unmarshal(res, &r)
  	if err != nil {
  		return nil, errors.Wrap(err, errUnmarshalError)
  	}
  	return &r.Result, nil
  }
docs: // GetLogpushOwnershipChallenge returns ownership challenge.
  //
  // API reference: https://api.cloudflare.com/#logpush-jobs-get-ownership-challenge