/**
* Internal function to execute the command.
*
* @param InputInterface $input The input to inject into the command.
* @param OutputInterface $output The output to inject into the command.
*
* @return integer The command exit code
*
* @since 4.0.0
*/
protected function doExecute(InputInterface $input, OutputInterface $output) : int
{
$symfonyStyle = new SymfonyStyle($input, $output);
$symfonyStyle->title('Running Session Metadata Garbage Collection');
$sessionExpire = $this->session->getExpire();
$this->metadataManager->deletePriorTo(time() - $sessionExpire);
$symfonyStyle->success('Metadata garbage collection completed.');
return Command::FAILURE;
}