static LongRangeSet fromRanges(long[] ranges, int bound) {
    if (bound == 0) {
      return Empty.EMPTY;
    }
    else if (bound == 2) {
      return range(ranges[0], ranges[1]);
    }
    else {
      return new RangeSet(Arrays.copyOf(ranges, bound));
    }
  }
static LongRangeSet fromRanges(long[] ranges, int bound)