public function getSynonyms($baseWord = '')
    {
        $this->initializeSynonymsUrl();
        $synonymsUrl = $this->_synonymsUrl;
        if (!empty($baseWord)) {
            $synonymsUrl .= '/' . $baseWord;
        }

        $response = $this->_sendRawGet($synonymsUrl);
        return $this->synonymParser->parseJson($baseWord, $response->getRawResponse());
    }