farm-2.x-dev/modules/core/import/modules/kml/farm_import_kml.routing.yml

farm.import.kml:
  path: '/import/kml'
  defaults:
    _form: Drupal\farm_import_kml\Form\KmlImporter
    _title: 'KML Import'
  requirements:
    _permission: 'create land asset'