}
            values.add(value);
            key = connection.getHeaderFieldKey(i);
            value = connection.getHeaderField(i);
        }
        final Iterator entries = map.entrySet().iterator();
        while (entries.hasNext()) {
            final Map.Entry entry = (Map.Entry) entries.next();
            entry.setValue(Collections.unmodifiableList((List) entry.getValue()));
        }

                used = true;
                return ae;
              }
            });
    ImmutableMap<AnEnum, AnEnum> copy = Maps.immutableEnumMap(map);
    assertThat(copy.entrySet()).containsExactly(mapEntry(AnEnum.A, AnEnum.A));
  }

  public void testEmptyImmutableEnumMap() {
    ImmutableMap<AnEnum, String> map = Maps.immutableEnumMap(ImmutableMap.<AnEnum, String>of());

  static <K extends Enum<K>, V> ImmutableMap<K, V> asImmutable(EnumMap<K, V> map) {
    switch (map.size()) {
      case 0:
        return ImmutableMap.of();
      case 1:
        Entry<K, V> entry = getOnlyElement(map.entrySet());
        return ImmutableMap.of(entry.getKey(), entry.getValue());
      default:
        return new ImmutableEnumMap<>(map);
    }
  }

  private final transient EnumMap<K, V> delegate;

    } catch (RuntimeException tolerated) {
      // GWT's TreeMap.entrySet().removeAll(null) doesn't throws NPE.
    }
  }

  @Override
  public void testEntrySetRetainAllNullFromEmpty() {
    try {
      super.testEntrySetRetainAllNullFromEmpty();
    } catch (RuntimeException tolerated) {
      // GWT's TreeMap.entrySet().retainAll(null) doesn't throws NPE.
    }
  }

  @Override

    } catch (RuntimeException tolerated) {
      // GWT's TreeMap.entrySet().removeAll(null) doesn't throws NPE.
    }
  }

  @Override
  public void testEntrySetRetainAllNullFromEmpty() {
    try {
      super.testEntrySetRetainAllNullFromEmpty();
    } catch (RuntimeException tolerated) {
      // GWT's TreeMap.entrySet().retainAll(null) doesn't throws NPE.
    }
  }

  @Override

        return CollectSpliterators.map(
            submap.entrySet().spliterator(),
            Spliterator.DISTINCT | Spliterator.NONNULL,
            AsMap.this::wrapEntry);
      }

      // The following methods are included for performance.

      @Override
      public boolean contains(@Nullable Object o) {
        return Collections2.safeContains(submap.entrySet(), o);
      }

      @Override

            h += listTable[i].hashCode();
        }
        return h;
    }

    @SuppressWarnings("unchecked")
    @Override
    public Set<Map.Entry<K, V>> entrySet() {
        if (entrySet == null) {
            entrySet = new AbstractSet<Entry<K, V>>() {
                @Override
                public Iterator<Entry<K, V>> iterator() {
                    return new ArrayMapIterator();
                }

        final Map<String, Object> factoryParamMap = new HashMap<>();
        factory.setInitParameterMap(factoryParamMap);

        // parameters
        for (final Map.Entry<String, String> entry : paramMap.entrySet()) {
            final String key = entry.getKey();
            if (key.startsWith(CRAWLER_PARAM_PREFIX)) {
                factoryParamMap.put(key.substring(CRAWLER_PARAM_PREFIX.length()), entry.getValue());
            }

    for (LoadingCache<Object, Object> cache : caches()) {
      Set<Entry<Object, Object>> entries = cache.asMap().entrySet();
      List<Entry<Object, Object>> warmed = warmUp(cache, WARMUP_MIN, WARMUP_MAX);

      Set<?> expected = new HashMap<>(cache.asMap()).entrySet();
      assertThat(entries).containsExactlyElementsIn(expected);
      assertThat(entries.toArray()).asList().containsExactlyElementsIn(expected);

  @CollectionSize.Require(SEVERAL)
  public void testPollFirst() {
    assertEquals(a, navigableMap.pollFirstEntry());
    assertEquals(entries.subList(1, entries.size()), copyToList(navigableMap.entrySet()));
  }

  @MapFeature.Require(absent = SUPPORTS_REMOVE)
  public void testPollFirstUnsupported() {
    assertThrows(UnsupportedOperationException.class, () -> navigableMap.pollFirstEntry());
  }