int i = value;
      return (i == Integer.MIN_VALUE) ? null : i - 1;
    }

    @Override
    Integer offset(Integer origin, long distance) {
      checkNonnegative(distance, "distance");
      return Ints.checkedCast(origin.longValue() + distance);
    }

    @Override
    public long distance(Integer start, Integer end) {
      return (long) end - start;
    }

    @Override
    public Integer minValue() {

      int i = value;
      return (i == Integer.MIN_VALUE) ? null : i - 1;
    }

    @Override
    Integer offset(Integer origin, long distance) {
      checkNonnegative(distance, "distance");
      return Ints.checkedCast(origin.longValue() + distance);
    }

    @Override
    public long distance(Integer start, Integer end) {
      return (long) end - start;
    }

    @Override
    public Integer minValue() {