code: @Override
          public Integer getValue(HebrewTime context) {
              switch (this.index) {
                  case HOUR12_INDEX:
                      return context.getClockHour();
                  case HOUR23_INDEX:
                      return context.hour23;
                  case PART_INDEX:
                      return context.part;
                  default:
                      throw new UnsupportedOperationException("Unknown element index: " + this.index);
              }
          }
docs: ~ Methoden ------------------------------------------------------