public function update($endpoint, array $parameters = array(), array $queryparameters = array())
    {
        if (!empty($queryparameters)) {
            $path = sprintf("%s/?%s", $endpoint, http_build_query($queryparameters));
        } else {
            $path = $endpoint;
        }

        return $this->execute("PATCH", sprintf("%s%s", $this->host, $path), $parameters);
    }