monster_menus-9.0.x-dev/modules/mm_media/mm_media.routing.yml

mm_media_library.ui:
  path: '/mm_media_library/{mm_tree}/{editor}'
  defaults:
    _form: 'Drupal\mm_media\Form\MMMediaLibrary'
  requirements:
    _permission: 'use tree browser'
    mm_tree: -?\d+
    _entity_access: 'editor.use'
    _csrf_token: 'TRUE'
  options:
    parameters:
      editor:
        type: entity:editor

mm_media_library.edit_media:
  path: '/mm_media_library/edit_media/{media_id}/{file_id}'
  defaults:
    _controller: '\Drupal\mm_media\Form\MMMediaLibrary::editMedia'
  requirements:
    _custom_access: '\Drupal\mm_media\Form\MMMediaLibrary::accessEditMedia'
    media_id: \d+
    file_id: \d+