ImmutableSortedMap::copyOfSorted);
  }

  // unsafe, comparator() returns a comparator on the specified type
  @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) {

  }

  /**
   * 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(

  public void testToImmutableSortedMap_java7_combine() {
    ImmutableSortedMap.Builder<String, Integer> zis =
        ImmutableSortedMap.<String, Integer>naturalOrder().put("one", 1).put("four", 4);
    ImmutableSortedMap.Builder<String, Integer> zat =
        ImmutableSortedMap.<String, Integer>naturalOrder().put("two", 2).put("three", 3);
    ImmutableSortedMap<String, Integer> sortedMap = zis.combine(zat).build();

    Collector<Entry<String, Integer>, ?, ImmutableSortedMap<String, Integer>> collector =
        ImmutableSortedMap.toImmutableSortedMap(
            String.CASE_INSENSITIVE_ORDER, Entry::getKey, Entry::getValue);
    BiPredicate<ImmutableSortedMap<String, Integer>, ImmutableSortedMap<String, Integer>>
        equivalence =
            Equivalence.equals()
                .onResultOf(ImmutableSortedMap<String, Integer>::comparator)

  public static class ImmutableSortedMapGenerator extends TestStringSortedMapGenerator {
    @Override
    public SortedMap<String, String> create(Entry<String, String>[] entries) {
      ImmutableSortedMap.Builder<String, String> builder = ImmutableSortedMap.naturalOrder();
      for (Entry<String, String> entry : entries) {
        checkNotNull(entry);
        builder.put(entry.getKey(), entry.getValue());
      }
      return builder.build();

  public static class ImmutableSortedMapGenerator extends TestStringSortedMapGenerator {
    @Override
    public SortedMap<String, String> create(Entry<String, String>[] entries) {
      ImmutableSortedMap.Builder<String, String> builder = ImmutableSortedMap.naturalOrder();
      for (Entry<String, String> entry : entries) {
        checkNotNull(entry);
        builder.put(entry.getKey(), entry.getValue());
      }
      return builder.build();

  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)));

  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)));

                  @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());
                    }