Inheritance: extends Controlle\Controller
 public function file($path)
 {
     $path = preg_replace("/\\.\\./", "", $path);
     $format = "/([0-9a-zA-Z]+)\\.[0-9a-fA-F]+\\.(js|css)\$/";
     $path = preg_replace($format, '$1.$2', $path);
     // check for allowed extensions
     $ext = pathinfo($path, PATHINFO_EXTENSION);
     if (in_array($ext, $this->allowedExtensions)) {
         return parent::file($path);
     }
     return abort(404);
 }