bookish_admin-1.0.x-dev/modules/bookish_image/bookish_image.routing.yml

bookish_image_preview:
  path: '/admin/bookish-image-preview/{file}/{image_style}'
  defaults:
    _controller: '\Drupal\bookish_image\Controller\BookishImagePreview::build'
  requirements:
    _custom_access: 'Drupal\bookish_image\Controller\BookishImagePreview::access'
    _csrf_token: 'TRUE'

bookish_image_form:
  path: '/admin/bookish-image-effect-form/{file}'
  defaults:
    _form: '\Drupal\bookish_image\Form\BookishImageForm'
    _title: 'Edit image'
  requirements:
    _custom_access: 'Drupal\bookish_image\Controller\BookishImagePreview::access'
    _convert_uuid: 'TRUE'