createProductStreams example

        }

        $this->createTestProduct($productData);

        $criteria = new Criteria([$this->ids->get('seo-product')]);
        $criteria->addAssociation('categories');

        /** @var ProductEntity $product */
        $product = $this->productRepository->search($criteria, Context::createDefaultContext())->first();

        $this->createProductStreams();
        $this->createCategoryStreams();
        $product->setStreamIds([$this->ids->create('stream_id_1')]);

        $category = $this->breadcrumbBuilder->getProductSeoCategory($product, $this->salesChannelContext);
        $category2 = $this->breadcrumbBuilder->getProductSeoCategory($product, $this->contextFactory->create('', $this->ids->get('sales-channel-2')));

        static::assertInstanceOf(CategoryCollection::class, $product->getCategories());

        if ($hasCategories) {
            static::assertInstanceOf(CategoryEntity::class, $category);
            static::assertInstanceOf(CategoryEntity::class, $category2);