public function outputFileCount(int $count): void
    {
        if (OutputInterface::VERBOSITY_NORMAL === $this->io->getVerbosity()) {
            $this->progressBar = $this->io->createProgressBar($count);
            $this->progressBar->start();
        } elseif ($this->io->getVerbosity() >= OutputInterface::VERBOSITY_VERBOSE) {
            $this->progressBar = new ProgressBar(new NullOutput());
        }
    }