ultimenu-8.x-2.x-dev/ultimenu.routing.yml

ultimenu.settings:
  path: '/admin/structure/ultimenu'
  defaults:
    _form: '\Drupal\ultimenu\Form\UltimenuSettingsForm'
    _title: Ultimenu
  requirements:
    _permission: 'administer ultimenu'

ultimenu.ajax:
  path: '/ultimenu/ajax'
  defaults:
    _controller: '\Drupal\ultimenu\Controller\UltimenuController::load'
  requirements:
    # The access will be checked against each block, also per menu item.
    _access: 'TRUE'