* usually include:
 *
 * <ul>
 *   <li>Static methods named {@code of}, accepting an explicit list of elements or entries.
 *   <li>Static methods named {@code copyOf} (or {@code copyOfSorted}), accepting an existing
 *       collection whose contents should be copied.
 *   <li>A static nested {@code Builder} class which can be used to populate a new immutable
 *       instance.
 * </ul>
 *

      Comparator<? super K> comparator) {
    return new Builder<K, V>(comparator).putAll(entries).build();
  }

  public static <K, V> ImmutableSortedMap<K, V> copyOfSorted(SortedMap<K, ? extends V> map) {
    // If map has a null comparator, the keys should have a natural ordering,
    // even though K doesn't explicitly implement Comparable.
    @SuppressWarnings("unchecked")

 * usually include:
 *
 * <ul>
 *   <li>Static methods named {@code of}, accepting an explicit list of elements or entries.
 *   <li>Static methods named {@code copyOf} (or {@code copyOfSorted}), accepting an existing
 *       collection whose contents should be copied.
 *   <li>A static nested {@code Builder} class which can be used to populate a new immutable
 *       instance.
 * </ul>
 *

    original.put("one", 1);
    original.put("two", 2);
    original.put("three", 3);

    ImmutableSortedMap<String, Integer> copy = ImmutableSortedMap.copyOfSorted(original);
    assertMapEquals(copy, "one", 1, "three", 3, "two", 2);
    assertThat(ImmutableSortedMap.copyOfSorted(copy)).isSameInstanceAs(copy);
    assertThat(copy.comparator()).isEqualTo(Ordering.natural());
  }

  public void testCopyOfSortedExplicit() {

   * undocumented and subject to change.
   *
   * @throws NullPointerException if any key or value in {@code map} is null
   */
  @SuppressWarnings("unchecked")
  public static <K, V> ImmutableSortedMap<K, V> copyOfSorted(SortedMap<K, ? extends V> map) {
    Comparator<? super K> comparator = map.comparator();
    if (comparator == null) {
      // If map has a null comparator, the keys should have a natural ordering,

   * undocumented and subject to change.
   *
   * @throws NullPointerException if any key or value in {@code map} is null
   */
  @SuppressWarnings("unchecked")
  public static <K, V> ImmutableSortedMap<K, V> copyOfSorted(SortedMap<K, ? extends V> map) {
    Comparator<? super K> comparator = map.comparator();
    if (comparator == null) {
      // If map has a null comparator, the keys should have a natural ordering,

    SortedSet<String> set = ImmutableSortedSet.copyOfSorted(input);
    assertThat(set).containsExactly("a", "in", "jumped", "over", "quick", "the").inOrder();
  }

  public void testCopyOfSorted_natural_comparator() {
    SortedSet<String> input = Sets.newTreeSet(asList("in", "the", "quick", "jumped", "over", "a"));
    SortedSet<String> set = ImmutableSortedSet.copyOfSorted(input);

        .thenReturn(Ordering.<Comparable<String>>natural());
    when(toCopy.entrySet()).thenReturn(entrySet);
    ImmutableSortedMultiset<String> unused = ImmutableSortedMultiset.copyOfSorted(toCopy);
    assertTrue(entrySet.toArrayCalled);
  }

  private static class IntegerDiv10 implements Comparable<IntegerDiv10> {
    final int value;

    IntegerDiv10(int value) {