Crud\Action\BaseAction::implementedEvents PHP Method

    public function implementedEvents()
    {
        $events = parent::implementedEvents();
        $events['Crud.beforeRender'][] = ['callable' => [$this, 'publishSuccess']];
        if (method_exists($this, 'viewVar')) {
            $events['Crud.beforeRender'][] = ['callable' => [$this, 'publishViewVar']];
        }
        return $events;
    }