docs: public DateTimeFormatterBuilder appendDecimal(
              DateTimeFieldType fieldType, int minDigits, int maxDigits) {
          if (fieldType == null) {
              throw new IllegalArgumentException("Field type must not be null");
          }
          if (maxDigits < minDigits) {
              maxDigits = minDigits;
          }
          if (minDigits < 0 || maxDigits <= 0) {
              throw new IllegalArgumentException();
          }
          if (minDigits <= 1) {
              return append0(new UnpaddedNumber(fieldType, maxDigits, false));
          } else {
              return append0(new PaddedNumber(fieldType, maxDigits, false, minDigits));
          }
      }