public function clear()
 {
     parent::clear();
     $this->ori = array(-1);
 }
 public function clear()
 {
     parent::clear();
     $this->ori = new NelioABAlternative();
     $this->track_heatmaps(true);
 }
 public function clear()
 {
     parent::clear();
     $this->ori = new NelioABHeadlineAlternative();
     $this->track_heatmaps(false);
 }