->setDescription('Cleans up jobs which exceed the maximum retention time')
->addOption('max-retention',null,InputOption::VALUE_REQUIRED,'The maximum retention time (will be parsed by DateTime).','1 month')
->addOption('max-retention-successful',null,InputOption::VALUE_REQUIRED,'The maximum retention time for succeeded jobs (will be parsed by DateTime).','7 days')
->addOption('per-call',null,InputOption::VALUE_REQUIRED,'The maximum number of jobs to clean-up per call.',1000)