code: public Date getLastIndexed(FeatureIndexType type) {
  		Date lastIndexed = null;
  		if (type == null) {
  			lastIndexed = getLastIndexed();
  		} else {
  			switch (type) {
  			case GEOPACKAGE:
  				lastIndexed = featureTableIndex.getLastIndexed();
  				break;
  			case RTREE:
  				if (rTreeIndexTableDao.has()) {
  					// Updated by triggers, assume up to date
  					lastIndexed = new Date();
  				}
  				break;
  			default:
  				throw new GeoPackageException("Unsupported FeatureIndexType: "
  						+ type);
  			}
  		}
  		return lastIndexed;
  	}
docs: Get the date last indexed
  
  @param type
  feature index type
  @return last indexed date or null