public function notify(NotificationInterface $notification, $level = self::INFO)
    {
        if (!$this->handlers)
        {
            $this->addHandler(new NullHandler());
        }

        foreach ($this->getHandlers() as $handler)
        {
            if ($handler->shouldHandle($notification, $level))
            {
                if (false === $handler->handle($notification, $level))
                {
                    return false;
                }
            }
        }

        return true;
    }