}

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

                  @Override

    }
  }

  public static class ImmutableSetWithBadHashesGenerator extends TestCollidingSetGenerator
      // Work around a GWT compiler bug.  Not explicitly listing this will
      // cause the createArray() method missing in the generated javascript.
      // TODO: Remove this once the GWT bug is fixed.
      implements TestCollectionGenerator<Object> {
    @Override
    public Set<Object> create(Object... elements) {

          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<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) {

      }
      return table.cellSet();
    }

    abstract Table<String, Integer, Character> createTable();

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

    @Override
    public List<Cell<String, Integer, Character>> order(

      }
      return table.cellSet();
    }

    abstract Table<String, Integer, Character> createTable();

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

    @Override
    public List<Cell<String, Integer, Character>> order(

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

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

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