public function __construct(Tv $tv, $title, $icon_url)
 {
     parent::__construct($tv->get_all_channel_group_id(), $title, $icon_url);
     $this->tv = $tv;
 }
 public function __construct(Tv $tv, $id, $title, $icon_url)
 {
     parent::__construct($id, $title, $icon_url);
     $this->tv = $tv;
 }