Dumplie\Customer\Infrastructure\InMemory\InMemoryProducts::getBySku PHP 메소드

    public function getBySku(SKU $sku) : Product
    {
        if (!array_key_exists((string) $sku, $this->products)) {
            throw ProductNotFoundException::bySku($sku);
        }
        return $this->products[(string) $sku];
    }