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();
    }