code: public function purge()
      {
          $fileSystem = new Filesystem();
          $fileSystem->remove($this->cacheDir);
  
          $this->logger->log(
              LogLevel::INFO,
              'Purged the MetaModels cache',
              ['contao' => new ContaoContext(__METHOD__, TL_CRON)]
          );
      }
docs: Purge the file cache.
  
  @return void
  
  @SuppressWarnings(PHPMD.Superglobals)
  @SuppressWarnings(PHPMD.CamelCaseVariableName)