o365-2.0.3/modules/o365_links/o365_links.services.yml

services:
  o365_links.constants:
    class: Drupal\o365_links\O365LinksConstants

  o365_links.cache_invalidator:
    class: Drupal\o365_links\O365CacheInvalidator
    arguments: ['@entity_type.manager', '@cache_tags.invalidator']