public void testCopyOfSparse() {
    Table<Character, Integer, String> table = TreeBasedTable.create();
    table.put('x', 2, "foo");
    table.put('r', 1, "bar");
    table.put('c', 3, "baz");
    table.put('b', 7, "cat");
    table.put('e', 5, "dog");
    table.put('c', 0, "axe");
    table.put('e', 3, "tub");
    table.put('r', 4, "foo");
    table.put('x', 5, "bar");
    validateTableCopies(table);
  }

    }
  }

  public void testForArrayWithPosition() {
    String[] array = {"foo", "bar", "cat"};
    Iterator<String> iterator = Iterators.forArrayWithPosition(array, 1);
    assertTrue(iterator.hasNext());
    assertEquals("bar", iterator.next());
    assertTrue(iterator.hasNext());
    assertEquals("cat", iterator.next());
    assertFalse(iterator.hasNext());
  }

    doTestTrimFrom("x-x-", "x-x");
    doTestTrimFrom("x-xx", "x-xx");
    doTestTrimFrom("x-x--xx---x----x", "x-x--xx---x----x");
    // additional testing using the doc example
    assertEquals("cat", anyOf("ab").trimFrom("abacatbab"));
  }

  private void doTestTrimFrom(String in, String out) {
    // Try a few different matchers which all match '-' and not 'x'
    assertEquals(out, is('-').trimFrom(in));

    doTestTrimFrom("x-x-", "x-x");
    doTestTrimFrom("x-xx", "x-xx");
    doTestTrimFrom("x-x--xx---x----x", "x-x--xx---x----x");
    // additional testing using the doc example
    assertEquals("cat", anyOf("ab").trimFrom("abacatbab"));
  }

  private void doTestTrimFrom(String in, String out) {
    // Try a few different matchers which all match '-' and not 'x'
    assertEquals(out, is('-').trimFrom(in));

   * the beginning and from the end of the string. For example:
   *
   * <pre>{@code
   * CharMatcher.anyOf("ab").trimFrom("abacatbab")
   * }</pre>
   *
   * ... returns {@code "cat"}.
   *
   * <p>Note that:
   *
   * <pre>{@code
   * CharMatcher.inRange('\0', ' ').trimFrom(str)
   * }</pre>
   *
   * ... is equivalent to {@link String#trim()}.
   */

  }

  @GwtIncompatible // unreasonably slow
  public void testKeySetIteration() {
    new IteratorTester<String>(
        6,
        MODIFIABLE,
        newLinkedHashSet(asList("foo", "bar", "baz", "dog", "cat")),
        IteratorTester.KnownOrder.KNOWN_ORDER) {
      private @Nullable Multimap<String, Integer> multimap;

      @Override
      protected Iterator<String> newTargetIterator() {

  }

  @GwtIncompatible // unreasonably slow
  public void testKeySetIteration() {
    new IteratorTester<String>(
        6,
        MODIFIABLE,
        newLinkedHashSet(asList("foo", "bar", "baz", "dog", "cat")),
        IteratorTester.KnownOrder.KNOWN_ORDER) {
      private @Nullable Multimap<String, Integer> multimap;

      @Override
      protected Iterator<String> newTargetIterator() {
        multimap = create();

  protected Map<String, Map<Integer, Character>> makePopulatedMap() {
    Table<String, Integer, String> table = HashBasedTable.create();
    table.put("foo", 1, "apple");
    table.put("bar", 1, "banana");
    table.put("foo", 3, "cat");
    return Tables.transformValues(table, TableCollectionTest.FIRST_CHARACTER).rowMap();
  }

   * the beginning and from the end of the string. For example:
   *
   * <pre>{@code
   * CharMatcher.anyOf("ab").trimFrom("abacatbab")
   * }</pre>
   *
   * ... returns {@code "cat"}.
   *
   * <p>Note that:
   *
   * <pre>{@code
   * CharMatcher.inRange('\0', ' ').trimFrom(str)
   * }</pre>
   *
   * ... is equivalent to {@link String#trim()}.
   */

          Maps.immutableEntry("bar", 1),
          Maps.immutableEntry("bar", 2),
          Maps.immutableEntry("foo", 3),
          Maps.immutableEntry("bar", 3),
          Maps.immutableEntry("cat", 2));
    }

    @Override
    public Collection<Entry<String, Integer>> create(Object... elements) {
      Multimap<String, Integer> multimap = createMultimap();
      for (Object element : elements) {