return next.getValue();
                        }

                        @Override
                        public String getKey() {
                          return next.getKey();
                        }

                        @Override
                        public boolean equals(@Nullable Object obj) {
                          return next.equals(obj);

      protected Entry<Class<? extends @NonNull B>, B> delegate() {
        return entry;
      }

      @Override
      @ParametricNullness
      public B setValue(@ParametricNullness B value) {
        cast(getKey(), value);
        return super.setValue(value);
      }
    };
  }

  @Override
  public Set<Entry<Class<? extends @NonNull B>, B>> entrySet() {

 */
final class ImmutableEnumMap<K, V> extends ForwardingImmutableMap<K, V> {
  static <K, V> ImmutableMap<K, V> asImmutable(Map<K, V> map) {
    for (Entry<K, V> entry : checkNotNull(map).entrySet()) {
      checkNotNull(entry.getKey());
      checkNotNull(entry.getValue());
    }
    return new ImmutableEnumMap<K, V>(map);
  }

  private ImmutableEnumMap(Map<? extends K, ? extends V> delegate) {
    super(delegate);
  }

      public K next() {
        return entryIterator.next().getKey();
      }
    };
  }

  @GwtIncompatible // Spliterator
  Spliterator<K> keySpliterator() {
    return CollectSpliterators.map(
        entrySet().spliterator(),
        Spliterator.ORDERED | Spliterator.DISTINCT | Spliterator.NONNULL | Spliterator.IMMUTABLE,
        Entry::getKey);
  }

      }
      checkArgument(!containsValue(value), "value already present: %s", value);
      V oldValue = delegate.setValue(value);
      checkState(Objects.equals(value, get(getKey())), "entry no longer in map");
      updateInverseMap(getKey(), true, oldValue, value);
      return oldValue;
    }
  }

  Iterator<Entry<K, V>> entrySetIterator() {
    Iterator<Entry<K, V>> iterator = delegate.entrySet().iterator();

      if (testAsByteSource) {
        suite.addTest(
            suiteForBytes(factory, entry.getValue().getBytes(UTF_8), name, entry.getKey(), true));
      } else {
        suite.addTest(suiteForString(factory, entry.getValue(), name, entry.getKey()));
      }
    }
    return suite;
  }

  static TestSuite suiteForBytes(

    newFirst = segment.removeEntryFromChain(entryThree, entryOne);
    assertThat(newFirst.getKey()).isSameInstanceAs(keyTwo);
    assertThat(newFirst.getValueReference().get()).isSameInstanceAs(valueTwo);
    assertThat(newFirst.getHash()).isEqualTo(hashTwo);
    newFirst = newFirst.getNext();
    assertThat(newFirst.getKey()).isSameInstanceAs(keyThree);
    assertThat(newFirst.getValueReference().get()).isSameInstanceAs(valueThree);

        }
        this.headerFields = null;
        for (final Entry<String, List<String>> property : this.connection.getRequestProperties().entrySet()) {
            final String key = property.getKey();
            final StringBuilder value = new StringBuilder();
            final Iterator<String> values = property.getValue().iterator();
            while (values.hasNext()) {
                value.append(values.next());

      }

      @Override
      @ParametricNullness
      public E next() {
        Map.Entry<E, Count> mapEntry = backingEntries.next();
        toRemove = mapEntry;
        return mapEntry.getKey();
      }

      @Override
      public void remove() {
        checkState(toRemove != null, "no calls to next() since the last call to remove()");
        size -= toRemove.getValue().getAndSet(0);

    @Test
    public void testEntrySet() throws Exception {
        Iterator<Map.Entry<String, String>> i = map.entrySet().iterator();
        assertThat(i.next().getKey(), is(nullValue()));
        assertThat(i.next().getKey(), is("1"));
        assertThat(i.next().getKey(), is("2"));
    }

    /**
     * Test method for {@link org.seasar.util.collection.ArrayIterator#remove()}
     * .
     */
    @Test