knowledge-8.x-1.x-dev/tests/modules/knowledge_test/knowledge_test.routing.yml

knowledge_test.report:
  path: '/knowledge/{knowledge}/report'
  defaults:
    _title: 'Report'
    _controller: '\Drupal\knowledge_test\Controller\KnowledgeTestController::knowledgeReport'
  requirements:
    # This is a test module.
    _access: 'TRUE'
    _csrf_token: 'TRUE'