private List<String> getInnerClassesNames() {
    final List<String> items = new ArrayList<>();

    for (InnerClassItem item : doNotInsertInnerListModel.getItems()) {
      final String name = item.getName().trim();
      if (!name.isEmpty()) {
        items.add(name);
      }
    }
    return items;
  }
private List<String> getInnerClassesNames()