getAverages example

        // see http://stackoverflow.com/questions/8321620/array-unique-vs-array-flip         $numbers = array_keys(array_flip($numbers));

        $products = $this->productGateway->getList($numbers, $context);

        $covers = $this->mediaService->getCovers($products, $context);

        $graduatedPrices = $this->graduatedPricesService->getList($products, $context);

        $cheapestPrices = $this->cheapestPriceService->getList($products, $context);

        $voteAverages = $this->voteService->getAverages($products, $context);

        $categories = $this->categoryService->getProductsCategories($products, $context);

        $manufacturerCovers = $this->mediaService->getList($this->getManufacturerCoverIds($products), $context);

        $result = [];
        foreach ($numbers as $number) {
            if (!\array_key_exists($number, $products)) {
                continue;
            }
            $product = $products[$number];

            

$shop->getId(),
            null,
            ContextService::FALLBACK_CUSTOMER_GROUP
        );

        $availability = null;
        $listingPrices = null;
        $combinations = null;
        $configurations = null;
        $variantConfiguration = null;
        $products = $this->productGateway->getList($numbers, $context);
        $average = $this->voteService->getAverages($products, $context);
        $cheapest = $this->getCheapestPrices($products, $shop->getId());
        $calculated = $this->getCalculatedPrices($shop, $products, $cheapest);
        $categories = $this->getCategories($products);
        $properties = $this->getProperties($products, $context);

        $variantFacet = $this->variantHelper->getVariantFacet();

        $productIds = array_map(
            static function DListProduct $product) {
                return $product->getId();
            },