recurring_events-2.0.x-dev/modules/recurring_events_ical/recurring_events_ical.services.yml

services:
  recurring_events_ical.event_ical:
    class: Drupal\recurring_events_ical\EventICal
    arguments: ['@entity_type.manager', '@request_stack', '@token']
  Drupal\recurring_events_ical\EventICal: '@recurring_events_ical.event_ical'