selectify-1.0.3/selectify.services.yml

services:
  selectify.twig_extension:
    class: Drupal\selectify\TwigExtension\SelectifyTwigExtension
    tags:
      - { name: twig.extension }

  selectify.style_service:
    class: Drupal\selectify\Service\SelectifyStyleService
    arguments: ['@config.factory']