setPriceGroup example

$product->setHeight($listProduct->getHeight());
        $product->setKeywords($listProduct->getKeywords());
        $product->setLength($listProduct->getLength());
        $product->setLongDescription($listProduct->getLongDescription());
        $product->setMinStock($listProduct->getMinStock());
        $product->setReleaseDate($listProduct->getReleaseDate());
        $product->setShippingTime($listProduct->getShippingTime());
        $product->setShortDescription($listProduct->getShortDescription());
        $product->setStock($listProduct->getStock());
        $product->setWeight($listProduct->getWeight());
        $product->setWidth($listProduct->getWidth());
        $product->setPriceGroup($listProduct->getPriceGroup());
        $product->setCreatedAt($listProduct->getCreatedAt());
        $product->setUpdatedAt($listProduct->getUpdatedAt());
        $product->setPriceRules($listProduct->getPriceRules());
        $product->setCheapestPriceRule($listProduct->getCheapestPriceRule());
        $product->setManufacturerNumber($listProduct->getManufacturerNumber());
        $product->setMetaTitle($listProduct->getMetaTitle());
        $product->setTemplate($listProduct->getTemplate());
        $product->setHasConfigurator($listProduct->hasConfigurator());
        $product->setSales($listProduct->getSales());
        $product->setHasEsd($listProduct->hasEsd());
        $product->setEsd($listProduct->getEsd());
        

if (!empty($data['__productAttribute_id'])) {
            $this->assignAttributeData($product, $data);
        }

        return $product;
    }

    private function assignPriceGroupData(ListProduct $product, array $data): void
    {
        if (!empty($data['__priceGroup_id'])) {
            $product->setPriceGroup(new PriceGroup());
            $product->getPriceGroup()->setId((int) $data['__priceGroup_id']);
            $product->getPriceGroup()->setName($data['__priceGroup_description']);
        }
    }

    /** * Helper function which assigns the shopware article * data to the product. (data of s_articles) */
    private function assignProductData(ListProduct $product, array $data): void
    {