arch-8.x-1.x-dev/modules/product/modules/downloadable/arch_downloadable_product.services.yml

services:
  downloadable_product.route_subscriber:
    class: Drupal\arch_downloadable_product\Routing\RouteSubscriber
    tags:
      - { name: event_subscriber }

  download_url_builder:
    class: Drupal\arch_downloadable_product\DownloadUrlBuilder
    arguments:
      - '@private_key'

  downloadable_product.access:
    class: Drupal\arch_downloadable_product\ProductFileAccess
    arguments:
      - '@database'
      - '@entity_type.manager'
      - '@download_url_builder'