return immutableEntry((TypeToken) k, v);
    }

    @Override
    @SuppressWarnings("unchecked")
    public Entry<TypeToken, Object>[] createArray(int length) {
      return (Entry<TypeToken, Object>[]) new Entry<?, ?>[length];
    }

    @Override
    public Iterable<Entry<TypeToken, Object>> order(List<Entry<TypeToken, Object>> insertionOrder) {

     * {@link #create(Object...)}.
     */
    protected abstract List<Short> create(Short[] elements);

    @Override
    public Short[] createArray(int length) {
      return new Short[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Short> order(List<Short> insertionOrder) {

     * {@link #create(Object...)}.
     */
    protected abstract List<Long> create(Long[] elements);

    @Override
    public Long[] createArray(int length) {
      return new Long[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Long> order(List<Long> insertionOrder) {
      return insertionOrder;

          immutableEntry(Country.JAPAN, "YEN"),
          immutableEntry(Country.SWITZERLAND, "FRANC"));
    }

    @SuppressWarnings("unchecked")
    @Override
    public Entry<Country, String>[] createArray(int length) {
      return (Entry<Country, String>[]) new Entry<?, ?>[length];
    }

    @Override
    public Iterable<Entry<Country, String>> order(List<Entry<Country, String>> insertionOrder) {

          immutableEntry((Class) Four.class, new Impl(4)),
          immutableEntry((Class) Five.class, new Impl(5)));
    }

    @Override
    @SuppressWarnings("unchecked")
    public Entry<Class, Impl>[] createArray(int length) {
      return (Entry<Class, Impl>[]) new Entry<?, ?>[length];
    }

    @Override
    public Iterable<Entry<Class, Impl>> order(List<Entry<Class, Impl>> insertionOrder) {
      return insertionOrder;

    @Override
    public SampleElements<Integer> samples() {
      return new SampleElements<>(1, 4, 3, 2, 5);
    }

    @Override
    public Integer[] createArray(int length) {
      return new Integer[length];
    }

    @Override
    public Iterable<Integer> order(List<Integer> insertionOrder) {
      return Ordering.natural().sortedCopy(insertionOrder);
    }

          mapEntry(Country.JAPAN, Currency.YEN),
          mapEntry(Country.SWITZERLAND, Currency.FRANC));
    }

    @SuppressWarnings("unchecked")
    @Override
    public Entry<Country, Currency>[] createArray(int length) {
      return (Entry<Country, Currency>[]) new Entry<?, ?>[length];
    }

    @Override
    public Iterable<Entry<Country, Currency>> order(List<Entry<Country, Currency>> insertionOrder) {

     * {@link #create(Object...)}.
     */
    protected abstract List<Long> create(Long[] elements);

    @Override
    public Long[] createArray(int length) {
      return new Long[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Long> order(List<Long> insertionOrder) {
      return insertionOrder;

     * {@link #create(Object...)}.
     */
    protected abstract List<Long> create(Long[] elements);

    @Override
    public Long[] createArray(int length) {
      return new Long[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Long> order(List<Long> insertionOrder) {
      return insertionOrder;

     * {@link #create(Object...)}.
     */
    protected abstract List<Double> create(Double[] elements);

    @Override
    public Double[] createArray(int length) {
      return new Double[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Double> order(List<Double> insertionOrder) {