filterOutOutOfStockHiddenCloseoutProducts example

if ($searchResult === null) {
            return;
        }

        /** @var ProductCollection|null $products */
        $products = $searchResult->getEntities();
        if ($products === null) {
            return;
        }

        if ($this->systemConfigService->get('core.listing.hideCloseoutProductsWhenOutOfStock', $saleschannelContext->getSalesChannel()->getId())) {
            $products = $this->filterOutOutOfStockHiddenCloseoutProducts($products);
        }

        $slider->setProducts($products);
    }

    private function filterOutOutOfStockHiddenCloseoutProducts(ProductCollection $products): ProductCollection
    {
        return $products->filter(function DProductEntity $product) {
            if ($product->getIsCloseout() && $product->getAvailableStock() <= 0) {
                return false;
            }