/**
  * validate.
  */
 public function validate($scanData = false)
 {
     $this->time->start();
     $return = parent::validate($scanData);
     $time = $this->time->stop();
     $this->log(array('type' => 'validate', 'scanData' => $scanData, 'time' => $time));
     return $return;
 }