fetchCustomerById example

$this->assignSalesChannelContext($this->browser);
    }

    public function testUpdateRemoteAddressByLogin(): void
    {
        $email = Uuid::randomHex() . '@example.com';

        $customerId = $this->login($email);

        $remoteAddress = $this->browser->getRequest()->getClientIp();

        $customer = $this->fetchCustomerById($customerId);

        static::assertNotSame($customer->getRemoteAddress(), $remoteAddress);
        static::assertSame($customer->getRemoteAddress(), IpUtils::anonymize((string) $remoteAddress));
    }

    private function login(string $email): string
    {
        $customerId = $this->createCustomer($email);

        $this->browser->request('POST', '/store-api/account/login', [
            'username' => $email,