protected function execute(InputInterface $input, OutputInterface $output)
{
$configurationLoader = new ConfigurationLoader('depfile.yml');
if ($configurationLoader->hasConfiguration()) {
$output->writeln('<error>depfile.yml already exists</error>');
return 1;
}
$configurationLoader->dumpConfiguration();
$output->writeln('depfile <info>dumped.</info>');
}