EnumHashBiMap.create(emptyBimap);
    assertEquals(bimap3, emptyBimap);
  }

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

  public void testEntrySet() {
    // Bug 3168290
    Map<Currency, String> map =
        ImmutableMap.of(

            };
        }

        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() {

    assertEquals("java.lang.String", new Entry<String, Integer>() {}.keyType().toString());
  }

  private static <K, V> TypeToken<Map<K, V>> mapOf(Class<K> keyType, Class<V> valueType) {
    return new TypeToken<Map<K, V>>() {}.where(new TypeParameter<K>() {}, keyType)
        .where(new TypeParameter<V>() {}, valueType);
  }

    assertEquals("java.lang.String", new Entry<String, Integer>() {}.keyType().toString());
  }

  private static <K, V> TypeToken<Map<K, V>> mapOf(Class<K> keyType, Class<V> valueType) {
    return new TypeToken<Map<K, V>>() {}.where(new TypeParameter<K>() {}, keyType)
        .where(new TypeParameter<V>() {}, valueType);
  }

element type, indexed by a set of unique <i>keys</i> of another type,
called the key type.
The value of an uninitialized map is <code>nil</code>.
</p>

<pre class="ebnf">
MapType     = "map" "[" KeyType "]" ElementType .
KeyType     = Type .
</pre>

<p>
The <a href="#Comparison_operators">comparison operators</a>
<code>==</code> and <code>!=</code> must be fully defined

element type, indexed by a set of unique <i>keys</i> of another type,
called the key type.
The value of an uninitialized map is <code>nil</code>.
</p>

<pre class="ebnf">
MapType     = "map" "[" KeyType "]" ElementType .
KeyType     = Type .
</pre>

<p>
The <a href="#Comparison_operators">comparison operators</a>
<code>==</code> and <code>!=</code> must be fully defined