Order::processBasketItems

protected function processBasketItems(array $basketItems)
{
	$result = [];

	foreach ($basketItems as $item)
	{
		if (
			!isset($item['code'])
			|| mb_strpos($item['code'], 'n') !== false
		)
		{
			$item['code'] = 'n'.(count($result) + 1);
		}

		$result[] = $item;
	}

	return $result;
}