// Command class
protected function execute(InputInterface $input, OutputInterface $output): int
{
        $output->writeln('START TEST');

        $bar = new ProgressBar($output, 2);
        $bar->setFormat("[%bar%]\n%message%");
        $bar->setMessage('123456790');
        $bar->advance();
        $bar->display();
        $bar->setMessage('ABC');
        $bar->advance();
        $bar->display();
        $bar->finish();

        $output->writeln('');
        $output->writeln('END TEST');

        return 0;
}