code: @Override
      public ChronoPeriod multipliedBy(int scalar) {
          if (this.isZero() || scalar == 1) {
              return this;
          }
          return new ChronoPeriodImpl(
                  chrono,
                  Math.multiplyExact(years, scalar),
                  Math.multiplyExact(months, scalar),
                  Math.multiplyExact(days, scalar));
      }
docs: -----------------------------------------------------------------------