public function post($query, Array $parameters = [], $autoParser = true) {
        curl_setopt_array($this->resource, [
            CURLOPT_POSTFIELDS => array_merge($parameters, [
                self::PARAMETER_QUERY => $query,
                self::PARAMETER_APIKEY => $this->apiKey
            ])
        ]);

        $dom = new \DOMDocument;
        $ret = curl_exec($this->resource);
        if (!$autoParser) return $ret;
        $dom->loadXML($ret);
        static::assert($dom);
        return $dom;
    }