mapBillingAddress example

$this->validateRegistrationData($data, $isGuest, $context, $additionalValidationDefinitions, $validateStorefrontUrl);

        $customer = $this->mapCustomerData($data, $isGuest, $context);

        /** @var DataBag $billing */
        $billing = $data->get('billingAddress');

        if ($data->has('title')) {
            $billing->set('title', $data->get('title'));
        }

        $billingAddress = $this->mapBillingAddress($billing, $context->getContext());
        $billingAddress['id'] = Uuid::randomHex();
        $billingAddress['customerId'] = $customer['id'];

        // if no shipping address is provided, use the billing address         $customer['defaultShippingAddressId'] = $billingAddress['id'];
        $customer['defaultBillingAddressId'] = $billingAddress['id'];
        $customer['addresses'][] = $billingAddress;

        if ($shipping = $data->get('shippingAddress')) {
            $shippingAddress = $this->mapShippingAddress($shipping, $context->getContext());
            $shippingAddress['id'] = Uuid::randomHex();