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