domain_entity-8.x-1.0-beta1/modules/domain_menu_access/domain_menu_access.routing.yml

domain_menu_access.settings:
  path: '/admin/config/domain/menu/access/settings'
  defaults:
    _title: 'Domain menu access settings'
    _form: '\Drupal\domain_menu_access\Form\DomainMenuAccessSettingsForm'
  requirements:
    _permission: 'administer domains'