/** Clears the reference queues used by this segment, if any. */
    void maybeClearReferenceQueues() {}

    /** Sets the value of the given {@code entry}. */
    void setValue(E entry, V value) {
      this.map.entryHelper.setValue(self(), entry, value);
    }

    /** Returns a copy of the given {@code entry}. */
    @CheckForNull
    E copyEntry(E original, E newNext) {

    }

    public static <T> T getValue(final Map<String, Object> doc, final String key, final Class<T> clazz, final T defaultValue) {
        final T value = getValue(doc, key, clazz);
        if (value == null) {
            return defaultValue;
        }
        return value;
    }

    @SuppressWarnings("unchecked")

        String language = getSupportedLanguage(DocumentUtil.getValue(doc, fessConfig.getIndexFieldLang(), String.class));
        if (language == null) {
            for (final String f : langFields) {
                if (doc.containsKey(f)) {
                    language = detectLanguage(DocumentUtil.getValue(doc, f, String.class));
                    if (language != null) {

   * multimap, {@link Entry#getValue} returns the value from the multimap, which may change over
   * time, and {@link Entry#setValue} modifies that value. Removing the mapping from the multimap
   * does not alter the value returned by {@code getValue()}, though a subsequent {@code setValue()}
   * call won't update the multimap but will lead to a revised value being returned by {@code
   * getValue()}.
   */
  @Override

    stream.writeInt(multimap.asMap().size());
    for (Map.Entry<K, Collection<V>> entry : multimap.asMap().entrySet()) {
      stream.writeObject(entry.getKey());
      stream.writeInt(entry.getValue().size());
      for (V value : entry.getValue()) {
        stream.writeObject(value);
      }
    }
  }

  /**
   * Populates a multimap by reading an input stream, as part of deserialization. See {@link

    BiMap<K, V> bimap = (BiMap<K, V>) map;

    for (Entry<K, V> entry : map.entrySet()) {
      assertEquals(entry.getKey() + "=" + entry.getValue(), entry.toString());
      assertEquals(entry.getKey(), bimap.inverse().get(entry.getValue()));
    }

    assertEquals("{" + JOINER.join(map.entrySet()) + "}", map.toString());
    assertEquals("[" + JOINER.join(map.entrySet()) + "]", map.entrySet().toString());

      for (Object element : elements) {
        @SuppressWarnings("unchecked")
        Entry<String, Integer> entry = (Entry<String, Integer>) element;
        multimap.put(entry.getKey(), entry.getValue());
      }
      return multimap.entries();
    }

    abstract Multimap<String, Integer> createMultimap();

    @Override
    @SuppressWarnings("unchecked")

       */
      if (key.equals(candidateKey)) {
        return entry.getValue();
      }
    }
    return null;
  }

  @Override
  public void forEach(BiConsumer<? super K, ? super V> action) {
    checkNotNull(action);
    for (Entry<K, V> entry : entries) {
      action.accept(entry.getKey(), entry.getValue());
    }
  }

  @Override
  public int size() {

      List<Entry<K, V>> builder = new ArrayList<>();
      for (Entry<K, Collection<V>> entry : insertionOrder) {
        for (V v : entry.getValue()) {
          builder.add(mapEntry(entry.getKey(), v));
        }
        map.put(entry.getKey(), entry.getValue());
      }
      Iterable<Entry<K, V>> ordered = multimapGenerator.order(builder);
      LinkedHashMap<K, Collection<V>> orderedMap = new LinkedHashMap<>();

      ImmutableBiMap.Builder<String, String> builder = ImmutableBiMap.builder();
      for (Entry<String, String> entry : entries) {
        checkNotNull(entry);
        builder.put(entry.getKey(), entry.getValue());
      }
      return builder.build();
    }
  }

  public static class ImmutableBiMapCopyOfGenerator extends TestStringBiMapGenerator {
    @Override