public function clearProductCount()
    {
        $arCacheTag = [static::class];
        $sCacheKey = 'product_count_'.$this->id;

        CCache::clear($arCacheTag, $sCacheKey);
        ItemStorage::clear(static::class, $this->id);

        $obParentItem = $this->parent;
        if ($obParentItem->isEmpty()) {
            return;
        }

        $obParentItem->clearProductCount();
    }