setValidation example

$accountMode = (int) $customer->getAccountMode();
        $doubleOptinWithAccount = ($accountMode === 0) && $config->get('optinregister');
        $doubleOptInAccountless = ($accountMode === 1) && $config->get('optinaccountless');

        $doubleOptinRegister = $doubleOptinWithAccount || $doubleOptInAccountless;
        $shop = $context->getShop();
        $shop->addAttribute('sendOptinMail', new Attribute([
            'sendOptinMail' => $doubleOptinRegister,
        ]));

        $customer->setReferer((string) $session->offsetGet('sReferer'));
        $customer->setValidation((string) ($data['register']['personal']['sValidation'] ?? ''));
        $customer->setAffiliate((int) $session->offsetGet('sPartner'));
        $customer->setPaymentId((int) $session->offsetGet('sPaymentID'));
        $customer->setDoubleOptinRegister($doubleOptinRegister);
        $customer->setDoubleOptinConfirmDate(null);

        /** @var Enlight_Event_EventManager $eventManager */
        $eventManager = $this->get('events');

        $errors = ['occurred' => false];
        $errors = $eventManager->filter(
            'Shopware_Modules_Admin_SaveRegister_BeforeRegister',
            

    public function hydrate(array $data)
    {
        $customer = new Customer();
        $customer->setId($data['__customer_id']);
        $customer->setEncoder($data['__customer_encoder']);
        $customer->setEmail($data['__customer_email']);
        $customer->setActive($data['__customer_active']);
        $customer->setAccountMode($data['__customer_accountmode']);
        $customer->setConfirmationKey($data['__customer_confirmationkey']);
        $customer->setPaymentId($data['__customer_paymentID']);
        $customer->setValidation($data['__customer_validation']);
        $customer->setAffiliate($data['__customer_affiliate']);
        $customer->setPaymentPreset($data['__customer_paymentpreset']);
        $customer->setLanguageId($data['__customer_language']);
        $customer->setShopId($data['__customer_subshopID']);
        $customer->setReferer($data['__customer_referer']);
        $customer->setInternalComment($data['__customer_internalcomment']);
        $customer->setFailedLogins($data['__customer_failedlogins']);
        $customer->setDefaultBillingAddressId($data['__customer_default_billing_address_id']);
        $customer->setDefaultShippingAddressId($data['__customer_default_shipping_address_id']);
        $customer->setTitle($data['__customer_title']);
        $customer->setSalutation($data['__customer_salutation']);