SortedMap<Integer, Character> row = sortedTable.row("c");
    assertEquals(2, row.size());
    assertEquals(1, row.tailMap(15).size());
  }

  public void testSubRowClearAndPut() {
    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    SortedMap<Integer, Character> row = (SortedMap<Integer, Character>) table.row("foo");
    SortedMap<Integer, Character> subRow = row.tailMap(2);

        .testForwarding(
            SortedMap.class,
            new Function<SortedMap, SortedMap>() {
              @Override
              public SortedMap apply(SortedMap delegate) {
                return wrap(delegate);
              }
            });
  }

  public void testEquals() {
    SortedMap<Integer, String> map1 = ImmutableSortedMap.of(1, "one");

  @Override
  public SortedMap<K, V> subMap(@ParametricNullness K fromKey, @ParametricNullness K toKey) {
    return subMap(fromKey, true, toKey, false);
  }

  @Override
  public SortedMap<K, V> headMap(@ParametricNullness K toKey) {
    return headMap(toKey, false);
  }

  @Override
  public SortedMap<K, V> tailMap(@ParametricNullness K fromKey) {

  private class SortedAsMap extends AsMap implements SortedMap<K, Collection<V>> {
    SortedAsMap(SortedMap<K, Collection<V>> submap) {
      super(submap);
    }

    SortedMap<K, Collection<V>> sortedMap() {
      return (SortedMap<K, Collection<V>>) submap;
    }

    @Override
    @CheckForNull
    public Comparator<? super K> comparator() {
      return sortedMap().comparator();
    }

      }
      SortedMap<K, V> map = (SortedMap<K, V>) delegate.create(allEntries.toArray());

      return createSubMap(map, firstExclusive, lastExclusive);
    }

    /**
     * Calls the smallest subMap overload that filters out the extreme values. This method is
     * overridden in NavigableMapTestSuiteBuilder.
     */
    SortedMap<K, V> createSubMap(SortedMap<K, V> map, K firstExclusive, K lastExclusive) {

    return SortedMapTestSuiteBuilder.using(
            new TestStringSortedMapGenerator() {
              @Override
              protected SortedMap<String, String> create(Entry<String, String>[] entries) {
                SortedMap<String, String> map = populate(new TreeMap<String, String>(), entries);
                return Collections.checkedSortedMap(map, String.class, String.class);
              }

        delegate.subMap(checkValid(fromKey), fromInclusive, checkValid(toKey), toInclusive));
  }

  @Override
  public SortedMap<K, V> subMap(K fromKey, K toKey) {
    return subMap(fromKey, true, toKey, false);
  }

  @Override
  public SortedMap<K, V> tailMap(K fromKey) {
    return tailMap(fromKey, true);
  }

  @Override
  public NavigableMap<K, V> tailMap(K fromKey, boolean inclusive) {

        delegate.subMap(checkValid(fromKey), fromInclusive, checkValid(toKey), toInclusive));
  }

  @Override
  public SortedMap<K, V> subMap(K fromKey, K toKey) {
    return subMap(fromKey, true, toKey, false);
  }

  @Override
  public SortedMap<K, V> tailMap(K fromKey) {
    return tailMap(fromKey, true);
  }

  @Override
  public NavigableMap<K, V> tailMap(K fromKey, boolean inclusive) {

    extends ForwardingMap<K, V> implements SortedMap<K, V> {
  // TODO(lowasser): identify places where thread safety is actually lost

  /** Constructor for use by subclasses. */
  protected ForwardingSortedMap() {}

  @Override
  protected abstract SortedMap<K, V> delegate();

  @Override
  @CheckForNull
  public Comparator<? super K> comparator() {

  private class SortedAsMap extends AsMap implements SortedMap<K, Collection<V>> {
    SortedAsMap(SortedMap<K, Collection<V>> submap) {
      super(submap);
    }

    SortedMap<K, Collection<V>> sortedMap() {
      return (SortedMap<K, Collection<V>>) submap;
    }

    @Override
    @CheckForNull
    public Comparator<? super K> comparator() {
      return sortedMap().comparator();
    }