config_obj_test.module

<?php
/**
 * This module is config_obj_test because there is already a config_test module
 * in the config module.
 */
/**
 * Implements hook_config_info().
 */
function config_obj_test_config_info() {
  $prefixes['config_obj_test.settings'] = array(
    'label' => t('Test settings'),
    'group' => t('Configuration'),
  );
  return $prefixes;
}