code: private function getTempDir(): string
      {
          $container = $this->getContainer();
          $tmpDir = sys_get_temp_dir().'/'.md5($container->getParameter('kernel.project_dir'));
  
          if (!is_dir($tmpDir)) {
              $container->get('filesystem')->mkdir($tmpDir);
          }
  
          return $tmpDir;
      }
docs: Creates an installation specific folder in the temporary directory and returns its path.