code: public static Seconds ofMinutes(int minutes) {
          if (minutes == 0) {
              return ZERO;
          }
          return new Seconds(Math.multiplyExact(minutes, SECONDS_PER_MINUTE));
      }
docs: Obtains a {@code Seconds} representing the number of seconds
  equivalent to a number of hours.
  <p>
  The resulting amount will be second-based, with the number of seconds
  equal to the number of minutes multiplied by 60.
  
  @param minutes  the number of minutes, positive or negative
  @return the amount with the input minutes converted to seconds, not null
  @throws ArithmeticException if numeric overflow occurs