How to customise completed export notification/events?

class ExportCompletion implements ShouldQueue
{
  // Truncated

  public function handle(): void
  {
    $this->export->touch('completed_at');

    if (! $this->export->user instanceof Authenticatable) {
      return;
    }

    $failedRowsCount = $this->export->getFailedRowsCount();

    Notification::make()
      ->title(__('filament-actions::export.notifications.completed.title'))
      ->body($this->exporter::getCompletedNotificationBody($this->export))
      ->when(
        ! $failedRowsCount,
        fn (Notification $notification) => $notification->success(),
      )
      ->when(
        $failedRowsCount && ($failedRowsCount < $this->export->total_rows),
        fn (Notification $notification) => $notification->warning(),
      )
      ->when(
        $failedRowsCount === $this->export->total_rows,
        fn (Notification $notification) => $notification->danger(),
      )
      ->when(
        $failedRowsCount < $this->export->total_rows,
        fn (Notification $notification) => $notification->actions(array_map(
          fn (ExportFormat $format): NotificationAction => $format->getDownloadNotificationAction($this->export),
          $this->formats,
        )),
      )
->sendToDatabase($this->export->user);
  }
}