public function register()
 {
     SleepingOwlDisplay::register('datatables', \KodiCMS\SleepingOwlAdmin\Display\DisplayDatatables::class);
     SleepingOwlDisplay::register('datatablesAsync', \KodiCMS\SleepingOwlAdmin\Display\DisplayDatatablesAsync::class);
     SleepingOwlDisplay::register('tab', \KodiCMS\SleepingOwlAdmin\Display\DisplayTab::class);
     SleepingOwlDisplay::register('tabbed', \KodiCMS\SleepingOwlAdmin\Display\DisplayTabbed::class);
     SleepingOwlDisplay::register('table', \KodiCMS\SleepingOwlAdmin\Display\DisplayTable::class);
     SleepingOwlDisplay::register('tree', \KodiCMS\SleepingOwlAdmin\Display\DisplayTree::class);
 }
 /**
  * @param DisplayInterface $display
  * @param string           $label
  * @param bool|false       $active
  *
  * @return $this
  */
 public function appendDisplay(DisplayInterface $display, $label, $active = false)
 {
     $tab = \SleepingOwlDisplay::tab($display)->setLabel($label)->setActive($active);
     $this->tabs[] = $tab;
     return $tab;
 }