docs: private Map<String, Object> getDialogObjectMap() {
  
          @SuppressWarnings("unchecked")
          Map<String, Object> objects = (Map<String, Object>)getSettings().getDialogObject();
          if (objects == null) {
              // using hash table as most efficient version of a synchronized map
              objects = new Hashtable<String, Object>();
              getSettings().setDialogObject(objects);
          }
          return objects;
      }