search_api-8.x-1.15/tests/search_api_test_tasks/search_api_test_tasks.services.yml

services:
  search_api_test_tasks.test_task_worker:
    class: Drupal\search_api_test_tasks\TestTaskWorker
    arguments: ['@search_api.task_manager']
    tags:
      - { name: event_subscriber }