validateReserialization(ImmutableTable.of());
  }

  public void testSerialization_singleElement() {
    validateReserialization(ImmutableTable.of('a', 2, "foo"));
  }

  public void testDenseSerialization_manualOrder() {
    ImmutableTable.Builder<Character, Integer, String> builder = ImmutableTable.builder();
    builder.put('b', 2, "foo");
    builder.put('b', 1, "bar");
    builder.put('a', 2, "baz");