static <E> ArrayList<E> generateArrayList(@Nullable E freshElement) {
    ArrayList<E> list = new ArrayList<>();
    list.add(freshElement);
    return list;
  }

  @Generates
  static <E> LinkedList<E> generateLinkedList(@Nullable E freshElement) {
    LinkedList<E> list = new LinkedList<>();
    list.add(freshElement);
    return list;
  }

  @Generates