/**
  * {@inheritdoc}
  */
 protected function execute(InputInterface $input, OutputInterface $output) : int
 {
     $rule = new \DateTime('-6 months');
     $amount = $this->userRepository->deleteAncientAttemptData($rule);
     $output->writeln(sprintf('<fg=green;bg=black>Successfully purged <comment>%d</comment> ancient auth models.</fg=green;bg=black>', $amount));
     return 0;
 }