return create(Cut.<C>belowAll(), Cut.belowValue(endpoint));
  }

  /**
   * Returns a range that contains all values less than or equal to {@code endpoint}.
   *
   * @since 14.0
   */
  public static <C extends Comparable<?>> Range<C> atMost(C endpoint) {
    return create(Cut.<C>belowAll(), Cut.aboveValue(endpoint));
  }

  /**

   */
  @SuppressWarnings("unchecked")
  static <C extends Comparable> Cut<C> belowAll() {
    return (Cut<C>) BelowAll.INSTANCE;
  }

  private static final long serialVersionUID = 0;

  private static final class BelowAll extends Cut<Comparable<?>> {
    private static final BelowAll INSTANCE = new BelowAll();

    private BelowAll() {
      /*

   */
  @SuppressWarnings("unchecked")
  static <C extends Comparable> Cut<C> belowAll() {
    return (Cut<C>) BelowAll.INSTANCE;
  }

  private static final long serialVersionUID = 0;

  private static final class BelowAll extends Cut<Comparable<?>> {
    private static final BelowAll INSTANCE = new BelowAll();

    private BelowAll() {
      /*

    return create(Cut.<C>belowAll(), Cut.belowValue(endpoint));
  }

  /**
   * Returns a range that contains all values less than or equal to {@code endpoint}.
   *
   * @since 14.0
   */
  public static <C extends Comparable<?>> Range<C> atMost(C endpoint) {
    return create(Cut.<C>belowAll(), Cut.aboveValue(endpoint));
  }

  /**

    for (int i = MIN_BOUND - 1; i <= MAX_BOUND + 1; i++) {
      cutsToTest.add(Cut.belowValue(i));
      cutsToTest.add(Cut.aboveValue(i));
    }
    cutsToTest.add(Cut.<Integer>aboveAll());
    cutsToTest.add(Cut.<Integer>belowAll());
    CUTS_TO_TEST = ImmutableList.copyOf(cutsToTest);
  }

  private void testRangesByLowerBounds(
      TreeRangeSet<Integer> rangeSet, Iterable<Range<Integer>> expectedRanges) {

    }

    @Override
    public Range<C> get(int index) {
      checkElementIndex(index, size);

      Cut<C> lowerBound;
      if (positiveBoundedBelow) {
        lowerBound = (index == 0) ? Cut.<C>belowAll() : ranges.get(index - 1).upperBound;
      } else {
        lowerBound = ranges.get(index).upperBound;
      }

      Cut<C> upperBound;
      if (positiveBoundedAbove && index == size - 1) {