public function getRequestParameters($request_parameters)
    {
        $ret = [];
        $parts = explode('&', $request_parameters);
        foreach ($parts as $part) {
            list($key, $value) = explode('=', $part);
            $key_decoded = urldecode($key);
            $value_decoded = urldecode($value);
            $ret[$key_decoded] = $value_decoded;
        }
        return $ret;
    }