}

  /**
   * Returns an immutable range set containing the specified single range. If {@link Range#isEmpty()
   * range.isEmpty()}, this is equivalent to {@link ImmutableRangeSet#of()}.
   */
  public static <C extends Comparable> ImmutableRangeSet<C> of(Range<C> range) {
    checkNotNull(range);
    if (range.isEmpty()) {
      return of();
    } else if (range.equals(Range.all())) {
      return all();
    } else {

  }

  /**
   * Returns an immutable range set containing the specified single range. If {@link Range#isEmpty()
   * range.isEmpty()}, this is equivalent to {@link ImmutableRangeSet#of()}.
   */
  public static <C extends Comparable> ImmutableRangeSet<C> of(Range<C> range) {
    checkNotNull(range);
    if (range.isEmpty()) {
      return of();
    } else if (range.equals(Range.all())) {
      return all();
    } else {

      return null;
    } else {
      Range<K> range = ranges.get(index);
      return range.contains(key) ? Maps.immutableEntry(range, values.get(index)) : null;
    }
  }

  @Override
  public Range<K> span() {
    if (ranges.isEmpty()) {
      throw new NoSuchElementException();
    }
    Range<K> firstRange = ranges.get(0);
    Range<K> lastRange = ranges.get(ranges.size() - 1);

          protected char[] escapeUnsafe(char c) {
            return noChars;
          }
        };
    EscaperAsserts.assertBasic(deletingEscaper);
    assertEquals(
        "Everything outside the printable ASCII range is deleted.",
        deletingEscaper.escape(
            "\tEverything\0 outside the\uD800\uDC00 "
                + "printable ASCII \uFFFFrange is \u007Fdeleted.\n"));
  }

    for (Range<C> range : asRanges) {
      assertFalse(range.isEmpty());
    }

    // test that the RangeSet's span is the span of all the ranges
    Iterator<Range<C>> itr = rangeSet.asRanges().iterator();
    Range<C> expectedSpan = null;
    if (itr.hasNext()) {
      expectedSpan = itr.next();
      while (itr.hasNext()) {
        expectedSpan = expectedSpan.span(itr.next());
      }
    }

    try {

        return string;
      }
    };
  }

  @Empty
  static <C extends Comparable<?>> Range<C> generateRange() {
    return Range.all();
  }

  @Generates
  static <C extends Comparable<?>> Range<C> generateRange(C freshElement) {
    return Range.singleton(freshElement);
  }

  @Generates
  static <E> Iterable<E> generateIterable(@Nullable E freshElement) {

    assertEquals(ImmutableSortedMap.of(2, 0), Maps.subMap(map, Range.open(0, 4)));
    assertEquals(ImmutableSortedMap.of(4, 0), Maps.subMap(map, Range.open(2, 6)));
    assertEquals(ImmutableSortedMap.of(4, 0, 6, 0), Maps.subMap(map, Range.open(3, 7)));
    assertEquals(empty, Maps.subMap(map, Range.open(20, 30)));

    assertEquals(map, Maps.subMap(map, Range.openClosed(0, 12)));

    assertEquals(ImmutableSortedMap.of(2, 0), Maps.subMap(map, Range.open(0, 4)));
    assertEquals(ImmutableSortedMap.of(4, 0), Maps.subMap(map, Range.open(2, 6)));
    assertEquals(ImmutableSortedMap.of(4, 0, 6, 0), Maps.subMap(map, Range.open(3, 7)));
    assertEquals(empty, Maps.subMap(map, Range.open(20, 30)));

    assertEquals(map, Maps.subMap(map, Range.openClosed(0, 12)));

    Range<Integer> range = Range.open(2, 5);
    assertTrue(range.encloses(range));
    assertTrue(range.encloses(Range.open(2, 4)));
    assertTrue(range.encloses(Range.open(3, 5)));
    assertTrue(range.encloses(Range.closed(3, 4)));

    assertFalse(range.encloses(Range.openClosed(2, 5)));
    assertFalse(range.encloses(Range.closedOpen(2, 5)));
    assertFalse(range.encloses(Range.closed(1, 4)));

    assertTrue(rangeSet.intersects(Range.closed(3, 4)));
    assertTrue(rangeSet.intersects(Range.closedOpen(0, 2)));
    assertTrue(rangeSet.intersects(Range.closedOpen(3, 7)));
    assertTrue(rangeSet.intersects(Range.greaterThan(2)));
    assertFalse(rangeSet.intersects(Range.greaterThan(7)));

    assertTrue(rangeSet.encloses(Range.closed(3, 4)));