public function get($key, $default = null)
    {
        $this->start();
        
        $value = isset($_SESSION[$key]) ? $_SESSION[$key] : '';
        
        \Wslim\Ioc::logger('session')->debug(sprintf('[%s]get %s:%s', static::getId(), $key, print_r($value, true)));
        
        return $value;
    }