}

    /**
     * @throws Exception
     */
    @Test
    public void testGetKeyTypeOfMapFromParameterType() throws Exception {
        Method m = Baz.class.getMethod("rawMap", Map.class);
        assertThat(MethodUtil.getKeyTypeOfMapFromParameterType(m, 0), is(nullValue()));

        m = Baz.class.getMethod("genericMap", Map.class);

      @SuppressWarnings("rawtypes") // JDT-based J2KT Java frontend does not permit the direct cast
      Map rawMap = map;
      @SuppressWarnings("unchecked") // covariant casts safe (unmodifiable)
      ImmutableClassToInstanceMap<B> cast = (ImmutableClassToInstanceMap<B>) rawMap;
      return cast;
    }
    return new Builder<B>().putAll(map).build();
  }

      @SuppressWarnings("rawtypes") // JDT-based J2KT Java frontend does not permit the direct cast
      Map rawMap = map;
      @SuppressWarnings("unchecked") // covariant casts safe (unmodifiable)
      ImmutableClassToInstanceMap<B> cast = (ImmutableClassToInstanceMap<B>) rawMap;
      return cast;
    }
    return new Builder<B>().putAll(map).build();
  }

  @Override
  public SortedSet<R> rowKeySet() {
    return (SortedSet<R>) rowMap().keySet();
  }

  /**
   * {@inheritDoc}
   *
   * <p>This method returns a {@link SortedMap}, instead of the {@code Map} specified in the {@link
   * Table} interface.
   */
  @Override
  public SortedMap<R, Map<C, V>> rowMap() {
    return (SortedMap<R, Map<C, V>>) super.rowMap();
  }

  @Override
  SortedMap<R, Map<C, V>> createRowMap() {

  @Override
  public ImmutableMap<R, Map<C, V>> rowMap() {
    // Casts without copying.
    return ImmutableMap.copyOf(rowMap);
  }

  @Override
  public int size() {
    return cellRowIndices.length;
  }

  @Override
  Cell<R, C, V> getCell(int index) {
    int rowIndex = cellRowIndices[index];
    Entry<R, ImmutableMap<C, V>> rowEntry = rowMap.entrySet().asList().get(rowIndex);

  @Override
  public boolean containsRow(@Nullable Object rowKey) {
    return Maps.safeContainsKey(rowMap(), rowKey);
  }

  @Override
  public boolean containsColumn(@Nullable Object columnKey) {
    return Maps.safeContainsKey(columnMap(), columnKey);
  }

  @Override
  public Set<R> rowKeySet() {
    return rowMap().keySet();
  }

  @Override
  public Set<C> columnKeySet() {
    return columnMap().keySet();

      cellRowIndices[i] = rowIndex;
      cellColumnIndices[i] = columnIndex;
    }
    this.cellRowIndices = cellRowIndices;
    this.cellColumnIndices = cellColumnIndices;
    this.rowMap = new RowMap();
    this.columnMap = new ColumnMap();
  }

  /** An immutable map implementation backed by an indexed nullable array. */

  @Override
  public boolean containsRow(@Nullable Object rowKey) {
    return Maps.safeContainsKey(rowMap(), rowKey);
  }

  @Override
  public boolean containsColumn(@Nullable Object columnKey) {
    return Maps.safeContainsKey(columnMap(), columnKey);
  }

  @Override
  public Set<R> rowKeySet() {
    return rowMap().keySet();
  }

  @Override
  public Set<C> columnKeySet() {
    return columnMap().keySet();

  @Override
  public SortedSet<R> rowKeySet() {
    return (SortedSet<R>) rowMap().keySet();
  }

  /**
   * {@inheritDoc}
   *
   * <p>This method returns a {@link SortedMap}, instead of the {@code Map} specified in the {@link
   * Table} interface.
   */
  @Override
  public SortedMap<R, Map<C, V>> rowMap() {
    return (SortedMap<R, Map<C, V>>) super.rowMap();
  }

  @Override
  SortedMap<R, Map<C, V>> createRowMap() {

  }

  public void testRowMapComparator() {
    sortedTable = TreeBasedTable.create();
    assertThat(sortedTable.rowMap().comparator()).isEqualTo(Ordering.natural());

    sortedTable = TreeBasedTable.create(Collections.reverseOrder(), Ordering.usingToString());
    assertThat(sortedTable.rowMap().comparator()).isEqualTo(Collections.reverseOrder());
  }

  public void testRowMapFirstKey() {