code: protected synchronized void listRecovery(String listId) {
  
          CmsHtmlList list = getListObject(this.getClass(), getSettings());
          if ((list != null) && !list.getId().equals(listId)) {
              list = null;
          }
          setList(list);
      }
docs: Recover the last list instance that is read from the request attributes.<p>
  
  This is required for keep the whole list in memory while you browse a page.<p>
  
  @param listId the id of the expected list