user_registration_reminder-1.x-dev/user_registration_reminder.services.yml

services:
  user_registration_reminder.manager:
    class: Drupal\user_registration_reminder\Manager
    arguments:
      [
        '@config.factory',
        '@entity_type.manager',
        '@plugin.manager.mail',
        '@user.data',
        '@language_manager',
        '@logger.factory',
        '@token',
        '@datetime.time',
      ]