google_tag-8.x-1.x-dev/tests/modules/google_tag_test/google_tag_test.module

<?php

/**
 * @file
 * Provides google_tag_test hook implementation to add route name event.
 */

declare(strict_types=1);

/**
 * Implements hook_page_attachments().
 */
function google_tag_test_page_attachments(array &$attachments) {
  \Drupal::getContainer()->get('google_tag.event_collector')->addEvent('route_name');
}