public function clearMessage($key)
    {
        if (isset($this->storage[$this->storageKey][$key])) {
            unset($this->storage[$this->storageKey][$key]);
        }

        if (isset($this->fromPrevious[$key])) {
            unset($this->fromPrevious[$key]);
        }

        if (isset($this->forNow[$key])) {
            unset($this->forNow[$key]);
        }
    }