* version.
   *
   * @throws UnsupportedOperationException always
   * @deprecated <b>Pass a key of type {@code Comparable} to use {@link
   *     ImmutableSortedMap#of(Comparable, Object)}.</b>
   */
  @DoNotCall("Pass a key of type Comparable")
  @Deprecated
  public static <K, V> ImmutableSortedMap<K, V> of(K k1, V v1) {
    throw new UnsupportedOperationException();

   *
   * <p><b>Note:</b> The returned view performs slightly better when {@code set1} is the smaller of
   * the two sets. If you have reason to believe one of your sets will generally be smaller than the
   * other, pass it first. Unfortunately, since this method sets the generic type of the returned
   * set based on the type of the first set passed, this could in rare cases force you to make a
   * cast, for example:
   *
   * <pre>{@code

    list.add("a");
    list.add("b");
    Iterator<String> iterator = list.iterator();
    try {
      get(iterator, -1, "c");
      fail();
    } catch (IndexOutOfBoundsException expected) {
      // pass
    }
    assertTrue(iterator.hasNext());
  }

  public void testAdvance_basic() {
    List<String> list = newArrayList();
    list.add("a");
    list.add("b");

   * avoid memory leaks when an element is no longer necessary.
   *
   * <p>This method accepts an array with element type {@code @Nullable T}, but callers must pass an
   * array whose contents are initially non-null. The {@code @Nullable} annotation indicates that
   * this method will write nulls into the array during iteration.
   *