blazy-8.x-2.x-dev/modules/blazy_ui/blazy_ui.routing.yml

blazy.settings:
  path: '/admin/config/media/blazy'
  defaults:
    _form: '\Drupal\blazy_ui\Form\BlazyConfigForm'
    _title: 'Blazy UI'
  requirements:
    _permission: 'administer blazy'