service_description-2.0.0/service_description.services.yml

services:
  service_description.handler:
    class: Drupal\service_description\Handler\ServiceDescriptionHandler
    arguments: ['@module_handler']
  service_description.file_locator:
    class: Drupal\service_description\Locator\FileLocator
    arguments: ['@service_description.handler']
  service_description.loader:
    class: Drupal\service_description\Loader\DescriptionLoader
    arguments: ['@service_description.file_locator']