// test restricting empty sets
        range1 = VersionRange.createFromVersionSpec("[,1.1],[1.4,]");
        range2 = VersionRange.createFromVersionSpec("[1.2,1.3]");
        range1 = range1.restrict(range2);
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);

  ImmutableRangeSet(ImmutableList<Range<C>> ranges) {
    this.ranges = ranges;
  }

  private ImmutableRangeSet(ImmutableList<Range<C>> ranges, ImmutableRangeSet<C> complement) {
    this.ranges = ranges;
    this.complement = complement;
  }

  private final transient ImmutableList<Range<C>> ranges;

  @Override
  public boolean intersects(Range<C> otherRange) {
    int ceilingIndex =
        SortedLists.binarySearch(

    }
  }

  @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);
    return Range.create(firstRange.lowerBound, lastRange.upperBound);
  }

  /**
   * Guaranteed to throw an exception and leave the {@code RangeMap} unmodified.
   *

  @Override
  public void put(Range<K> range, V value) {
    if (!range.isEmpty()) {
      checkNotNull(value);
      remove(range);
      entriesByLowerBound.put(range.lowerBound, new RangeMapEntry<K, V>(range, value));
    }
  }

  @Override
  public void putCoalescing(Range<K> range, V value) {
    // don't short-circuit if the range is empty - it may be between two ranges we can coalesce.

  }

  @Override
  public void put(Range<K> range, V value) {
    if (!range.isEmpty()) {
      checkNotNull(value);
      remove(range);
      entriesByLowerBound.put(range.lowerBound, new RangeMapEntry<K, V>(range, value));
    }
  }

  @Override
  public void putCoalescing(Range<K> range, V value) {
    // don't short-circuit if the range is empty - it may be between two ranges we can coalesce.

        VersionRange range = parseValid("(1,3)");
        assertNotContains(range, "1");
        assertContains(range, "2-SNAPSHOT");
        assertNotContains(range, "3");
        assertEquals(range, parseValid(range.toString()));
    }

    @Test
    void testSingleVersion() {
        VersionRange range = parseValid("[1]");
        assertContains(range, "1");
        assertEquals(range, parseValid(range.toString()));

        }

        if (typeof options.ranges === 'object') {
            for (range in options.ranges) {

                if (typeof options.ranges[range][0] === 'string')
                    start = moment(options.ranges[range][0], this.locale.format);
                else
                    start = moment(options.ranges[range][0]);

                if (typeof options.ranges[range][1] === 'string')

     *         specified version range.
     *         <p>
     *         The restrictions of the returned version range will be an intersection of the restrictions
     *         of this version range and the specified version range if both version ranges have
     *         restrictions. Otherwise, the restrictions on the returned range will be empty.
     *         </p>
     *         <p>

    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)));
    assertFalse(range.encloses(Range.closed(3, 6)));

rgba(0, 123, 255, 0.25);\n}\n\n.custom-range.custom-range-primary::-webkit-slider-thumb {\n  background-color: #007bff;\n}\n\n.custom-range.custom-range-primary::-webkit-slider-thumb:active {\n  background-color: #b3d7ff;\n}\n\n.custom-range.custom-range-primary::-moz-range-thumb {\n  background-color: #007bff;\n}\n\n.custom-range.custom-range-primary::-moz-range-thumb:active {\n  background-color: #b3d7ff;\n}\n\n.custom-range.custom-range-primary::-ms-thumb {\n  background-color: #007bff;\n}\n\n.cu...