protected function _normalizedParams($request, $oauthValues)
    {
        $query = parse_url($request->getUri(), PHP_URL_QUERY);
        parse_str($query, $queryArgs);

        $post = [];
        $body = $request->body();
        if (is_string($body) && $request->getHeaderLine('content-type') === 'application/x-www-form-urlencoded') {
            parse_str($body, $post);
        }
        if (is_array($body)) {
            $post = $body;
        }

        $args = array_merge($queryArgs, $oauthValues, $post);
        $pairs = $this->_normalizeData($args);
        $data = [];
        foreach ($pairs as $pair) {
            $data[] = implode('=', $pair);
        }
        sort($data, SORT_STRING);

        return implode('&', $data);
    }