entity_activity-8.x-1.0-beta13/modules/entity_activity_mail/entity_activity_mail.routing.yml

entity_activity_mail.settings_form:
  path: '/admin/config/content/entity-activity/mail-settings'
  defaults:
    _form: '\Drupal\entity_activity_mail\Form\SettingsForm'
    _title: 'Entity Activity Mail Settings'
  requirements:
    _permission: 'administer entity activity mail'
  options:
    _admin_route: TRUE