/**
  *        constructor
  *
  * @param \EE_Admin_Page $admin_page
  * @return EE_Registrations_List_Table
  */
 function __construct($admin_page)
 {
     if (!empty($_GET['event_id'])) {
         $extra_query_args = array();
         foreach ($admin_page->get_views() as $key => $view_details) {
             $extra_query_args[$view_details['slug']] = array('event_id' => $_GET['event_id']);
         }
         $this->_views = $admin_page->get_list_table_view_RLs($extra_query_args);
     }
     parent::__construct($admin_page);
     $this->_status = $this->_admin_page->get_registration_status_array();
     EE_Registry::instance()->load_helper('Template');
 }