bbb-8.x-1.x-dev/modules/bbb_node/bbb_node.services.yml

services:
  bbb_node.meeting.attendee_access_check:
    class: Drupal\bbb_node\Access\BBBMeetingAttendeeAccessCheck
    arguments:
      - '@bbb_node.meeting'
      - '@entity_type.manager'
    tags:
      - { name: access_check, applies_to: _bbb_meeting_attendee_access_check}
  bbb_node.meeting.moderator_access_check:
    class: Drupal\bbb_node\Access\BBBMeetingModeratorAccessCheck
    arguments:
      - '@bbb_node.meeting'
      - '@entity_type.manager'
    tags:
      - { name: access_check, applies_to: _bbb_meeting_moderator_access_check }
  bbb_node.meeting:
    class: Drupal\bbb_node\Service\NodeMeeting
    arguments:
      - '@current_user'
      - '@entity_type.manager'
      - '@bbb.meeting'