protected function initializeData(&$data, Address $address)
 {
     $defaults = ['tnt_service' => '', 'tnt_contactLastName' => $address->getLastname(), 'tnt_contactFirstName' => $address->getFirstname(), 'tnt_emailAdress' => $address->getCustomer()->getEmail(), 'tnt_phoneNumber' => $address->getPhone(), 'tnt_zipCode' => $address->getZipcode(), 'tnt_city' => $address->getCity(), 'tnt_department' => $this->getDepartmentFromZipCode($address->getZipcode())];
     foreach ($defaults as $varKey => $varVal) {
         if (empty($data[$varKey])) {
             $data[$varKey] = $varVal;
         }
     }
 }