code: protected int handleGetExtendedYear() {
          int year;
          if (newestStamp(ERA, YEAR, UNSET) <= getStamp(EXTENDED_YEAR)) {
              year = internalGet(EXTENDED_YEAR, 1); // Default to year 1
          } else {
              int cycle = internalGet(ERA, 1) - 1; // 0-based cycle
              // adjust to the instance specific epoch
              year = cycle * 60 + internalGet(YEAR, 1) - (epochYear - CHINESE_EPOCH_YEAR);
          }
          return year;
      }
docs: Implement abstract Calendar method to return the extended year
  defined by the current fields.  This will use either the ERA and
  YEAR field as the cycle and year-of-cycle, or the EXTENDED_YEAR
  field as the continuous year count, depending on which is newer.