edlp_d8/sites/all/modules/contrib/dev/config_ignore/tests/config_ignore_hook_test/config_ignore_hook_test.module

<?php

/**
 * @file
 * Module that implements all the hook from Config Ignore for testing purposes.
 */

/**
 * Implements hook_config_ignore_settings_alter().
 */
function config_ignore_hook_test_config_ignore_settings_alter(array &$settings) {
  $settings[] = 'system.site';
}