/**
* Set translator object for localization
*
* @param \Zend\Translator\Translator|null $translator
* @return \Zend\Form\Element\File
*/
public function setTranslator($translator = null)
{
$adapter = $this->getTransferAdapter();
$adapter->setTranslator($translator);
parent::setTranslator($translator);
return $this;
}