getCountryIdByIso example

$this->createShippingMethod();

        $this->browser = $this->createCustomSalesChannelBrowser([
            'id' => $this->ids->create('sales-channel'),
            'shippingMethodId' => $this->ids->get('shipping'),
        ]);

        $this->browser->setServerParameter('HTTP_SW_CONTEXT_TOKEN', $this->ids->create('token'));

        $this->createProduct();

        $countryId = Uuid::fromBytesToHex($this->getCountryIdByIso());

        $this->createCustomerAndLogin($countryId);

        if ($vatIds) {
            $this->customerRepository->update(
                [['id' => $this->ids->get('customer'), 'vatIds' => $vatIds]],
                Context::createDefaultContext()
            );
        }

        $this->currencyRepository->update([[