code: func newClient(url string, http *http.Client) *Client {
  	return &Client{
  		Client: &httpclient.Client{
  			ErrNotFound: ErrNotFound,
  			URL:         url,
  			HTTP:        http,
  		},
  	}
  }
docs: // newClient creates a generic Client object, additional attributes must
  // be set by the caller