Symfony\Component\Console\Helper\ProgressBar::setMessage PHP Method

    public function setMessage($message, $name = 'message')
    {
        $this->messages[$name] = $message;
    }

 protected function execute(InputInterface $input, OutputInterface $output)
 {
     $io = new SymfonyStyle($input, $output);
     $io->title('Exporting databases');
     $io->section('Exporting all databases');
     $strategies = $this->collectorDbStrategy->collectDatabasesStrategies();
     $totalStrategies = count($strategies);
     $io->writeln($totalStrategies . ' strategie(s) found.');
     $progressBar = new ProgressBar($output, $totalStrategies);
     $progressBar->setFormat(self::PROGRESS_BAR_FORMAT);
     $progressBar->setMessage('Beginning backuping');
     $this->eventDispatcher->dispatch(Events::BACKUP_BEGINS, new BackupBeginsEvent($output));
     $progressBar->start();
     $reportContent = new \ArrayObject();
     foreach ($strategies as $strategy) {
         $strategyIdentifier = $strategy->getIdentifier();
         $setProgressBarMessage = function ($message) use($progressBar, $strategyIdentifier) {
             $message = "[{$strategyIdentifier}] {$message}";
             $progressBar->setMessage($message);
             $progressBar->display();
         };
         $exportedFiles = $this->processorDatabaseDumper->dump($strategy, $setProgressBarMessage);
         $reportContent->append("Backuping of the database: {$strategyIdentifier}");
         foreach ($exportedFiles as $file) {
             $filename = $file->getPath();
             $reportContent->append("\t→ {$filename}");
         }
         $progressBar->advance();
     }
     $progressBar->finish();
     $io->newLine(2);
     $io->section('Report');
     $io->text($reportContent->getArrayCopy());
     $this->eventDispatcher->dispatch(Events::BACKUP_ENDS, new BackupEndsEvent($output));
 }