};
        }

        private <Q> Supplier<Q> getMapSupplier(Key<Q> key) {
            Key<?> keyType = key.getTypeParameter(0);
            Key<Object> valueType = key.getTypeParameter(1);
            if (keyType.getRawType() != String.class) {
                throw new DIException("Only String keys are supported for maps: " + key);
            }
            return () -> {

    assertEquals(bimap3, emptyBimap);
  }

  @GwtIncompatible // keyType
  public void testKeyType() {
    EnumBiMap<Currency, Country> bimap = EnumBiMap.create(Currency.class, Country.class);
    assertEquals(Currency.class, bimap.keyType());
  }

  @GwtIncompatible // valueType
  public void testValueType() {