/**
  * Admin page callback for list view
  *
  * @return void
  */
 public function page_list()
 {
     self::$list_table->prepare_items();
     echo '<div class="wrap">';
     echo sprintf('<h2>%s <a href="%s" class="add-new-h2">%s</a></h2>', __('Stream Notifications', 'stream-notifications'), add_query_arg(array('page' => self::NOTIFICATIONS_PAGE_SLUG, 'view' => 'rule'), is_network_admin() ? network_admin_url(WP_Stream_Admin::ADMIN_PARENT_PAGE) : admin_url(WP_Stream_Admin::ADMIN_PARENT_PAGE)), __('Add New'));
     // xss okay
     self::$list_table->display();
     echo '</div>';
 }