class BasicAuthHooks

class BasicAuthHooks {
    
    /**
     * Implements hook_help().
     */
    public function help($route_name, RouteMatchInterface $route_match) {
        switch ($route_name) {
            case 'help.page.basic_auth':
                $output = '';
                $output .= '<h2>' . t('About') . '</h2>';
                $output .= '<p>' . t('The HTTP Basic Authentication module supplies an <a href="http://en.wikipedia.org/wiki/Basic_access_authentication">HTTP Basic authentication</a> provider for web service requests. This authentication provider authenticates requests using the HTTP Basic Authentication username and password, as an alternative to using Drupal\'s standard cookie-based authentication system. It is only useful if your site provides web services configured to use this type of authentication (for instance, the <a href=":rest_help">RESTful Web Services module</a>). For more information, see the <a href=":hba_do">online documentation for the HTTP Basic Authentication module</a>.', [
                    ':hba_do' => 'https://www.drupal.org/documentation/modules/basic_auth',
                    ':rest_help' => \Drupal::moduleHandler()->moduleExists('rest') ? Url::fromRoute('help.page', [
                        'name' => 'rest',
                    ])->toString() : '#',
                ]) . '</p>';
                return $output;
        }
    }

}