}

  /**
   * Not supported. Use {@code ImmutableSortedMap.copyOf(ImmutableMap.ofEntries(...))}.
   *
   * @deprecated Use {@code ImmutableSortedMap.copyOf(ImmutableMap.ofEntries(...))}.
   */
  @DoNotCall("ImmutableSortedMap.ofEntries not currently available; use ImmutableSortedMap.copyOf")
  @Deprecated
  @SafeVarargs
  public static <K, V> ImmutableSortedMap<K, V> ofEntries(

  }

  /**
   * Not supported. Use {@code ImmutableSortedMap.copyOf(ImmutableMap.ofEntries(...))}.
   *
   * @deprecated Use {@code ImmutableSortedMap.copyOf(ImmutableMap.ofEntries(...))}.
   */
  @DoNotCall("ImmutableSortedMap.ofEntries not currently available; use ImmutableSortedMap.copyOf")
  @Deprecated
  @SafeVarargs
  public static <K, V> ImmutableSortedMap<K, V> ofEntries(

  @SuppressWarnings("unchecked")
  public static <K, V> ImmutableSortedMap<K, V> of() {
    return new Builder<K, V>((Comparator<K>) NATURAL_ORDER).build();
  }

  public static <K extends Comparable<? super K>, V> ImmutableSortedMap<K, V> of(K k1, V v1) {
    return copyOf(singletonMap(k1, v1));
  }

  public static <K extends Comparable<? super K>, V> ImmutableSortedMap<K, V> of(
      K k1, V v1, K k2, V v2) {

    tester.testAllPublicStaticMethods(ImmutableSortedMap.class);
    tester.testAllPublicInstanceMethods(ImmutableSortedMap.<String, Integer>naturalOrder());
    tester.testAllPublicInstanceMethods(ImmutableSortedMap.of());
    tester.testAllPublicInstanceMethods(ImmutableSortedMap.of("one", 1));
    tester.testAllPublicInstanceMethods(ImmutableSortedMap.of("one", 1, "two", 2, "three", 3));
  }

  public void testSubMap_boundedRange() {
    ImmutableSortedMap<Integer, Integer> map = ImmutableSortedMap.of(2, 0, 4, 0, 6, 0, 8, 0, 10, 0);
    ImmutableSortedMap<Integer, Integer> empty = ImmutableSortedMap.of();

    assertEquals(map, Maps.subMap(map, Range.closed(0, 12)));
    assertEquals(ImmutableSortedMap.of(2, 0, 4, 0), Maps.subMap(map, Range.closed(0, 4)));

     */
    return Collector.of(
        () -> new ImmutableSortedMap.Builder<K, V>(comparator),
        (builder, input) -> builder.put(keyFunction.apply(input), valueFunction.apply(input)),
        ImmutableSortedMap.Builder::combine,
        ImmutableSortedMap.Builder::buildOrThrow,
        Collector.Characteristics.UNORDERED);
  }

     */
    return Collector.of(
        () -> new ImmutableSortedMap.Builder<K, V>(comparator),
        (builder, input) -> builder.put(keyFunction.apply(input), valueFunction.apply(input)),
        ImmutableSortedMap.Builder::combine,
        ImmutableSortedMap.Builder::buildOrThrow,
        Collector.Characteristics.UNORDERED);
  }

                  @Override
                  protected SortedMap<String, String> create(Entry<String, String>[] entries) {
                    ImmutableSortedMap.Builder<String, String> builder =
                        ImmutableSortedMap.naturalOrder();
                    for (Entry<String, String> entry : entries) {
                      builder.put(entry.getKey(), entry.getValue());
                    }

    // ImmutableMap.Builder maintains the order of the elements as inserted, so the map will have
    // whatever ordering the network's nodes do, so ImmutableSortedMap is unnecessary even if the
    // input nodes are sorted.
    ImmutableMap.Builder<N, NetworkConnections<N, E>> nodeConnections = ImmutableMap.builder();
    for (N node : network.nodes()) {

                  @Override
                  protected SortedMap<String, String> create(Entry<String, String>[] entries) {
                    ImmutableSortedMap.Builder<String, String> builder =
                        ImmutableSortedMap.naturalOrder();
                    for (Entry<String, String> entry : entries) {
                      builder.put(entry.getKey(), entry.getValue());
                    }