setLastname example

$customer->setPaymentPreset($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']);
        $customer->setFirstname($data['__customer_firstname']);
        $customer->setLastname($data['__customer_lastname']);
        $customer->setNumber($data['__customer_customernumber']);
        $customer->setNewsletter((bool) $data['__active_campaign']);

        if ($data['__customer_birthday']) {
            $customer->setBirthday(new DateTime($data['__customer_birthday']));
        }

        if ($customer->getBirthday()) {
            $customer->setAge($customer->getBirthday()->diff(new DateTime())->y);
        }

        

    public function hydrate(array $data)
    {
        $address = new Address();
        $address->setId((int) $data['__address_id']);
        $address->setCompany($data['__address_company']);
        $address->setDepartment($data['__address_department']);
        $address->setSalutation($data['__address_salutation']);
        $address->setTitle($data['__address_title']);
        $address->setFirstname($data['__address_firstname']);
        $address->setLastname($data['__address_lastname']);
        $address->setStreet($data['__address_street']);
        $address->setZipcode($data['__address_zipcode']);
        $address->setCity($data['__address_city']);
        $address->setCountryId((int) $data['__address_country_id']);
        $address->setStateId((int) $data['__address_state_id']);
        $address->setVatId($data['__address_ustid']);
        $address->setPhone($data['__address_phone']);
        $address->setAdditionalAddressLine1($data['__address_additional_address_line1']);
        $address->setAdditionalAddressLine2($data['__address_additional_address_line2']);

        if ($address->getCountryId()) {