HelpTestTwigExtension.php

<?php

namespace Drupal\help_topics_twig_tester;

use Twig\Extension\AbstractExtension;

/**
 * Defines and registers Drupal Twig extensions for testing help topics.
 */
class HelpTestTwigExtension extends AbstractExtension {
    
    /**
     * {@inheritdoc}
     */
    public function getNodeVisitors() {
        return [
            new HelpTestTwigNodeVisitor(),
        ];
    }

}