https://bookmanager.com/item/Xb3QhEtS1QlvcovaBqZBtw
TBM Bookmanager
tbmbookmanager
https://api.drupal.org/api/drupal/core%21modules%21book%21src%21BookManager.php/property/BookManager%3A%3AconfigFactory/9
BookManager::$configFactory | Drupal API
bookmanagerdrupalapi
https://w3techs.com/technologies/breakdown/cm-bookmanager/proxy
Usage Report of Bookmanager broken down by Reverse Proxy Services
What is the percentage of websites using Bookmanager broken down by reverse proxy services
usage reportbroken downreverse proxybookmanagerservices