filecache-8.x-1.0-alpha3/filecache.services.yml

services:
  cache.backend.file_system:
    class: Drupal\filecache\Cache\FileSystemBackendFactory
    arguments:
      - '@file_system'
      - '@settings'
      - '@datetime.time'
      - '@cache_tags.invalidator.checksum'
      - '@serialization.phpserialize'