public function processValues($values)
 {
     if ($this->isNew()) {
         $values['type'] = $values['filename']->getType();
         $values['filesize'] = round($values['filename']->getSize() / 1024);
     }
     return parent::processValues($values);
 }
 protected function doBind(array $values)
 {
     $values['folder_id'] = $this->getOption('folder')->getId();
     parent::doBind($values);
 }