Map<String, Double> transformed = transformValues(map, SQRT_FUNCTION);

    assertEquals(ImmutableMap.of("a", 2.0, "b", 3.0), transformed);
  }

  public void testTransformEntries() {
    Map<String, String> map = ImmutableMap.of("a", "4", "b", "9");
    EntryTransformer<String, String, String> concat =
        new EntryTransformer<String, String, String>() {
          @Override

            immutableEntry("b", 9),
            immutableEntry("b", 9),
            immutableEntry("c", 36))
        .inOrder();
  }

  @GwtIncompatible // untested
  public void testTransformEntries() {
    SetMultimap<String, Integer> multimap = ImmutableSetMultimap.of("a", 1, "a", 4, "b", -6);
    EntryTransformer<String, Integer, String> transformer =
        new EntryTransformer<String, Integer, String>() {