crossword-8.x-1.x-dev/modules/crossword_image/crossword_image.routing.yml

crossword_image.regenerate:
  path: '/admin/config/media/crossword/regenerate'
  defaults:
    _form: '\Drupal\crossword_image\Form\CrosswordImageRegenerateForm'
    _title: 'Regenerate Crossword Images'
  requirements:
    _permission: 'administer crossword images'