replace-8.x-1.0/replace.routing.yml

replace:
  path: '/admin/replace'
  defaults:
    _title: 'Replace content'
    _controller: '\Drupal\replace\Controller\NodeController::replacePage'
  requirements:
    _node_add_access: 'node:{node_type}'
replace.replace:
  path: '/admin/replace/{node_type}'
  defaults:
    _title: 'Replace content in type'
    _form: '\Drupal\replace\Form\ReplaceContentForm'
  requirements:
    _node_add_access: 'node:{node_type}'
  options:
    _node_operation_route: TRUE
    parameters:
      node_type:
        type: entity:node_type
        with_config_overrides: TRUE