how to get selected table record inside list page resource

class ListStoks extends ListRecords
{
    protected static string $resource = StokResource::class;

    protected function getHeaderActions(): array
    {
        return [
            Actions\CreateAction::make(),
            Action::make('Export')
                ->color('info')
                ->icon('heroicon-o-arrow-down-tray')
                ->action(function ($livewire) {
                    dd($livewire->getSelectedTableRecords());
                    $name = "laporan-stock-barang-" . date('d-m-y H:i:s') . ".csv";
                    return Excel::download(new StockExport(), $name, \Maatwebsite\Excel\Excel::CSV);
                })
                ->openUrlInNewTab(),
        ];
    }
}