* **[[https://api.drupal.org/api/drupal/core!includes!ajax.inc/group/ajax/8|Ajax framework]]** (broken)
  * drupal7: [[https://api.drupal.org/api/drupal/includes%21ajax.inc/group/ajax/7|...]] - siehe **use-ajax** für Links
  * d8: \Drupal\Core\Form\FormBuilder - static::AJAX_FORM_REQUEST (search !!!)