docs: public boolean isSupported(DateTimeFieldType type) {
          if (type == null) {
              return false;
          }
          DurationFieldType durType = type.getDurationType();
          if (DATE_DURATION_TYPES.contains(durType) ||
                  durType.getField(getChronology()).getUnitMillis() >=
                      getChronology().days().getUnitMillis()) {
              return type.getField(getChronology()).isSupported();
          }
          return false;
      }