getCustomerCreateValidationDefinition example

return $customer;
    }

    private function validateRegistrationData(DataBag $data, bool $isGuest, SalesChannelContext $context, ?DataValidationDefinition $additionalValidations, bool $validateStorefrontUrl): void
    {
        /** @var DataBag $addressData */
        $addressData = $data->get('billingAddress');
        $addressData->set('firstName', $data->get('firstName'));
        $addressData->set('lastName', $data->get('lastName'));
        $addressData->set('salutationId', $data->get('salutationId'));

        $definition = $this->getCustomerCreateValidationDefinition($isGuest, $data, $context);

        if ($additionalValidations) {
            foreach ($additionalValidations->getProperties() as $key => $validation) {
                $definition->add($key, ...$validation);
            }
        }

        if ($validateStorefrontUrl) {
            $definition
                ->add('storefrontUrl', new NotBlank(), new Choice(array_values($this->getDomainUrls($context))));
        }