public function get($countryId, array $fields = array())
    {
        $params = array();
        if (!empty($fields)) {
            $params['fields'] = implode(',', $fields);
        }
        $endpoint = '/admin/countrys/'.$countryId.'.json';
        $response = $this->request($endpoint, 'GET', $params);
        return $this->createObject(Country::class, $response['country']);
    }