improvements-2.x-dev/tests/modules/improvements_test/improvements_test.routing.yml

improvements_test.altered_page_result:
  path: /improvements-test/altered-page-result
  defaults:
    _controller: \Drupal\improvements_test\Controller\ImprovementsTestController::alteredPageResult
    _title: Page title
  requirements:
    _access: 'TRUE'

improvements_test.entity_uuid_access_check:
  path: /improvements-test/entity-uuid-access-check/{node}
  defaults:
    _controller: \Drupal\improvements_test\Controller\ImprovementsTestController::entityUuidAccessCheck
  requirements:
    _entity_uuid: 'TRUE'

entity.test_config_entity.collection:
  path: '/admin/config/system/test_config_entities'
  defaults:
    _entity_list: 'test_config_entity'
    _title: 'Test config entities'
  requirements:
    _permission: 'administer site configuration'

entity.second_config_entity.collection:
  path: '/admin/config/system/second_config_entities'
  defaults:
    _entity_list: 'second_config_entity'
    _title: 'Second config entities'
  requirements:
    _permission: 'administer site configuration'