metatag-8.x-1.x-dev/tests/modules/metatag_test_custom_route/metatag_test_custom_route.routing.yml

metatag_test_custom_route.test:
  path: '/metatag_test_custom_route'
  defaults:
    _title: 'Metatag Test'
    _controller: '\Drupal\metatag_test_custom_route\Controller\MetatagTestCustomRouteController::test'
  requirements:
    _permission: 'access content'


metatag_test_custom_route.entity_route:
  path: '/metatag_test_custom_route/{entity_test}'
  defaults:
    _entity_view: 'entity_test.full'
  requirements:
    _permission: 'access content'