ProductStep::loadProductGridSummaryAction

public function loadProductGridSummaryAction(Item $entity,
	array $products = [],
	?string $currencyId = null
): array
{
	$orderId = $this->getOrderId($entity);
	$basketItems = $this->prepareBasketItems($products);

	$refreshBasketResult = $this->forward(
		Order::class,
		'refreshBasket',
		[
			'orderId' => $orderId,
			'basketItems' => $basketItems,
		]
	);

	$items = $refreshBasketResult['items'];
	$result = [
		'totalRows' => count($items),
		'currency' => $currencyId,
	];

	$total = $refreshBasketResult['total'] ?? [];
	if (!empty($total))
	{
		$result = array_merge(
			$result,
			[
				'items' => $items,
				'totalRows' => count($items),
				'totalCost' => $total['result'],
				'totalTax' => $total['taxSum'],
				'totalDiscount' => $total['discount'],
				'totalWithoutDiscount' => $total['sum'],
				'taxIncluded' => $this->isTaxIncluded($items),
				'taxPartlyIncluded' => $this->isTaxPartlyIncluded($items),
				'currency' => $currencyId,
			]
		);
	}

	return $result;
}