code: public function get($url="")
      {
          try {
              $this->guzzleResponse = $this->_client->request('GET', $url);
              $this->_setLinks();
          } catch (RequestException $e) {
              throw new GreenhouseAPIResponseException($e->getMessage(), 0, $e);
          }
          
          /**
           * Just return the response cast as a string.  The rest of the universe need
           * not be aware of Guzzle's details.
           */
          return (string) $this->guzzleResponse->getBody();
      }
docs: Fetch the URL. As this is guzzle, this can take a relative URL.  See the Guzzle
  docs more info.
  
  @params  string  $url        A relative URL off the base URL. A full URL
  should work, too
  @return  string  The Raw JSON response from Greenhouse
  @throws  GreenhouseAPIResponseException  if the get request fails