private static Map<String, String> toHashMap(Entry<String, String>[] entries) {
    return populate(new HashMap<String, String>(), entries);
  }

  // TODO: call conversion constructors or factory methods instead of using
  // populate() on an empty map
  @CanIgnoreReturnValue
  private static <T, M extends Map<T, String>> M populate(M map, Entry<T, String>[] entries) {
    for (Entry<T, String> entry : entries) {

  }

  @Override
  public @Nullable Entry<E> firstEntry() {
    return forwardMultiset().lastEntry();
  }

  @Override
  public @Nullable Entry<E> lastEntry() {
    return forwardMultiset().firstEntry();
  }

  abstract Iterator<Entry<E>> entryIterator();

  @Nullable private transient Set<Entry<E>> entrySet;

  @Override
  public Set<Entry<E>> entrySet() {
    Set<Entry<E>> result = entrySet;

        map.put(ConfigName.FIELD, fieldConfigMap);
        for (final Map.Entry<String, String> entry : ParameterUtil.parse(configParameters).entrySet()) {
            final String key = entry.getKey();
            if (key.startsWith(CONFIG_PREFIX)) {
                configConfigMap.put(key.substring(CONFIG_PREFIX.length()), entry.getValue());
            } else if (key.startsWith(CLIENT_PREFIX)) {

  @SafeVarargs
  public static <K, V> ImmutableMap<K, V> ofEntries(Entry<? extends K, ? extends V>... entries) {
    @SuppressWarnings("unchecked") // we will only ever read these
    Entry<K, V>[] entries2 = (Entry<K, V>[]) entries;
    return copyOf(Arrays.asList(entries2));
  }

  /**
   * Verifies that {@code key} and {@code value} are non-null, and returns a new immutable entry
   * with those values.
   *

   */
  private List<E> snapshotElementsToList() {
    List<E> list = newArrayListWithExpectedSize(size());
    for (Multiset.Entry<E> entry : entrySet()) {
      E element = entry.getElement();
      for (int i = entry.getCount(); i > 0; i--) {
        list.add(element);
      }
    }
    return list;
  }

  // Modification Operations

  /**

  private static final class EntrySet<K, V> extends ImmutableSet<Entry<K, V>> {
    @Weak private final transient ImmutableSetMultimap<K, V> multimap;

    EntrySet(ImmutableSetMultimap<K, V> multimap) {
      this.multimap = multimap;
    }

    @Override
    public boolean contains(@Nullable Object object) {
      if (object instanceof Entry) {
        Entry<?, ?> entry = (Entry<?, ?>) object;

  public UnmodifiableIterator<E> iterator() {
    Iterator<? extends Entry<E, ?>> entries = outEdgeToNode.entrySet().iterator();
    return new AbstractIterator<E>() {
      @Override
      protected @Nullable E computeNext() {
        while (entries.hasNext()) {
          Entry<E, ?> entry = entries.next();
          if (targetNode.equals(entry.getValue())) {
            return entry.getKey();
          }
        }
        return endOfData();

        when(nameFilter.accept(any(), any())).thenReturn(false);
        when(nameFilter.accept(parent, acceptedName)).thenReturn(true);

        FileEntry initial = entry("first");
        FileEntry[] page1 = new FileEntry[] { entry("."), entry(".."), entry("rejected"), entry(acceptedName) };
        TestIterator it = TestIterator.create(tree, parent, "*", nameFilter, 0, initial, List.of(new FileEntry[][] { page1 }));

        // Act

    @Override
    protected final Map<String, String> create(Entry<String, String>[] entries) {
      HashMap<String, String> map = new HashMap<>();
      for (Entry<String, String> entry : entries) {
        map.put(entry.getKey(), entry.getValue());
      }
      return wrap(map);
    }

    abstract Map<String, String> wrap(HashMap<String, String> map);
  }

  }

  @Override
  public @Nullable Entry<E> firstEntry() {
    return forwardMultiset().lastEntry();
  }

  @Override
  public @Nullable Entry<E> lastEntry() {
    return forwardMultiset().firstEntry();
  }

  abstract Iterator<Entry<E>> entryIterator();

  @LazyInit private transient @Nullable Set<Entry<E>> entrySet;

  @Override
  public Set<Entry<E>> entrySet() {