requireNonNull(table.rowKeySet().comparator()), table.columnComparator());
    result.putAll(table);
    return result;
  }

  TreeBasedTable(Comparator<? super R> rowComparator, Comparator<? super C> columnComparator) {
    super(new TreeMap<R, Map<C, V>>(rowComparator), new Factory<C, V>(columnComparator));
    this.columnComparator = columnComparator;
  }

  // TODO(jlevy): Move to StandardRowSortedTable?

            requireNonNull(table.rowKeySet().comparator()), table.columnComparator());
    result.putAll(table);
    return result;
  }

  TreeBasedTable(Comparator<? super R> rowComparator, Comparator<? super C> columnComparator) {
    super(new TreeMap<R, Map<C, V>>(rowComparator), new Factory<C, V>(columnComparator));
    this.columnComparator = columnComparator;
  }

  // TODO(jlevy): Move to StandardRowSortedTable?

  protected TreeBasedTable<String, Integer, Character> create(
      Comparator<? super String> rowComparator,
      Comparator<? super Integer> columnComparator,
      Object... data) {
    TreeBasedTable<String, Integer, Character> table =
        TreeBasedTable.create(rowComparator, columnComparator);
    table.put("foo", 4, 'a');
    table.put("cat", 1, 'b');
    table.clear();
    populate(table, data);
    return table;
  }