test1/public/drupal-8.3.1/modules/user_import/user_import....

services:
  user_import.mysql_connect:
    class: Drupal\user_import\Service\MysqlConnectService
  user_import.add_user:
      class: Drupal\user_import\Service\AddUserService
  user_import.ldap_connect:
        class: Drupal\user_import\Service\LdapConnectService