o365-2.0.3/modules/o365_sso_user/o365_sso_user.routing.yml

o365_sso_user.settings_form:
  path: '/admin/config/system/o365/settings/sso_user'
  defaults:
    _form: '\Drupal\o365_sso_user\Form\SettingsForm'
    _title: 'User sync settings'
  requirements:
    _permission: 'access o365 sso user settings page'
  options:
    _admin_route: TRUE