HelpTestHooks.php

<?php

declare (strict_types=1);
namespace Drupal\help_test\Hook;

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Hook\Attribute\Hook;

/**
 * Hook implementations for help_test.
 */
class HelpTestHooks {
    
    /**
     * Implements hook_help().
     */
    public function help($route_name, RouteMatchInterface $route_match) : null {
        // Do not implement a module overview page to test an empty implementation.
        // @see \Drupal\help\Tests\HelpTest
        return NULL;
    }

}