MoreHelpPageTestHooks.php

<?php

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

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

/**
 * Hook implementations for more_help_page_test.
 */
class MoreHelpPageTestHooks {
    
    /**
     * Implements hook_help().
     */
    public function help($route_name, RouteMatchInterface $route_match) {
        switch ($route_name) {
            // Return help for the same route as the help_page_test module.
            case 'help_page_test.test_array':
                return [
                    '#markup' => 'Help text from more_help_page_test_help module.',
                ];
        }
    }
    
    /**
     * Implements hook_help_section_info_alter().
     */
    public function helpSectionInfoAlter(array &$info) {
        $info['hook_help']['weight'] = 500;
    }

}