docs: public void setInto(ReadWritableInterval writableInterval, Object object, Chronology chrono) {
          ReadableInterval input = (ReadableInterval) object;
          writableInterval.setInterval(input);
          if (chrono != null) {
              writableInterval.setChronology(chrono);
          } else {
              writableInterval.setChronology(input.getChronology());
          }
      }