public function init()
{
$translator = \Zend_Registry::get('container')->getService('translator');
$this->addElement('file', 'file', array('required' => TRUE));
$this->addElement('reset', 'reset', array('label' => $translator->trans('Cancel')));
$this->addElement('submit', 'submit', array('label' => $translator->trans('Replace', array(), 'themes'), 'ignore' => TRUE));
}