protected function createRandomName(\ORC\Util\File\FileInfo $fileinfo)
 {
     $name = md5(UUID::guid()) . '.' . $fileinfo->getExtension();
     return $name;
 }
 public function valid(\ORC\Util\File\FileInfo $fileinfo)
 {
     if (!in_array(strtolower($fileinfo->getExtension()), $this->_exts)) {
         throw new Exception('EXTENSION_NOT_VALID');
     }
 }