return Maps.transformValues(fromTable.column(columnKey), function);
    }

    Cell<R, C, V2> applyToValue(Cell<R, C, V1> cell) {
      return immutableCell(cell.getRowKey(), cell.getColumnKey(), function.apply(cell.getValue()));
    }

    @Override
    Iterator<Cell<R, C, V2>> cellIterator() {
      return Iterators.transform(fromTable.cellSet().iterator(), this::applyToValue);
    }

   * row, and so on.
   *
   * <p>Each cell is an immutable snapshot of a row key / column key / value mapping, taken at the
   * time the cell is returned by a method call to the set or its iterator.
   */
  @Override
  public Set<Cell<R, C, V>> cellSet() {
    return super.cellSet();
  }

  @Override
  Iterator<Cell<R, C, V>> cellIterator() {
    return new CellIterator();
  }

              return (Table<String, String, Integer>) table;
            });
    Cell<String, String, @Nullable Integer> cell = immutableCell("one", "uno", null);
    assertThrows(
        NullPointerException.class,
        () -> Stream.of((Cell<String, String, Integer>) cell).collect(collector));
  }

  public void testToTableConflict() {
    Collector<Cell<String, String, Integer>, ?, Table<String, String, Integer>> collector =

        "language":   "indonesian"
      },
      "italian_elision": {
        "type":         "elision",
        "articles": [
          "c", "l", "all", "dall", "dell",
          "nell", "sull", "coll", "pell",
          "gl", "agl", "dagl", "degl", "negl",
          "sugl", "un", "m", "t", "s", "v", "d"
        ]
      },
      "italian_stop": {
        "type":       "stop",

    for (Table.Cell<? extends R, ? extends C, ? extends V> cell : table.cellSet()) {
      put(cell.getRowKey(), cell.getColumnKey(), cell.getValue());
    }
  }

  @LazyInit private transient @Nullable Set<Cell<R, C, V>> cellSet;

  @Override
  public Set<Cell<R, C, V>> cellSet() {
    Set<Cell<R, C, V>> result = cellSet;

        "language":   "indonesian"
      },
      "italian_elision": {
        "type":         "elision",
        "articles": [
          "c", "l", "all", "dall", "dell",
          "nell", "sull", "coll", "pell",
          "gl", "agl", "dagl", "degl", "negl",
          "sugl", "un", "m", "t", "s", "v", "d"
        ]
      },
      "italian_stop": {
        "type":       "stop",

        "language":   "indonesian"
      },
      "italian_elision": {
        "type":         "elision",
        "articles": [
          "c", "l", "all", "dall", "dell",
          "nell", "sull", "coll", "pell",
          "gl", "agl", "dagl", "degl", "negl",
          "sugl", "un", "m", "t", "s", "v", "d"
        ]
      },
      "italian_stop": {
        "type":       "stop",

    for (Table.Cell<? extends R, ? extends C, ? extends V> cell : table.cellSet()) {
      put(cell.getRowKey(), cell.getColumnKey(), cell.getValue());
    }
  }

  @LazyInit private transient @Nullable Set<Cell<R, C, V>> cellSet;

  @Override
  public Set<Cell<R, C, V>> cellSet() {
    Set<Cell<R, C, V>> result = cellSet;

    }

    @Override
    Cell<R, C, V> get(int index) {
      return getCell(index);
    }

    @Override
    public boolean contains(@Nullable Object object) {
      if (object instanceof Cell) {
        Cell<?, ?, ?> cell = (Cell<?, ?, ?>) object;
        Object value = RegularImmutableTable.this.get(cell.getRowKey(), cell.getColumnKey());
        return value != null && value.equals(cell.getValue());
      }

    }

    @Override
    public Set<Cell<String, Integer, Character>> create(Object... elements) {
      Table<String, Integer, Character> table = createTable();
      for (Object element : elements) {
        @SuppressWarnings("unchecked")
        Cell<String, Integer, Character> cell = (Cell<String, Integer, Character>) element;
        table.put(cell.getRowKey(), cell.getColumnKey(), cell.getValue());
      }