code: @Override
    public void cleanup() {
      // @formatter:off
      this
        .setMLSupporter(null)
        .setStatisticsSupporter(null)
        .setIndexingHandler(null)
        .setJoinsHandler(null)
        .setMetaDataHandler(null)
        .setMiscellanyHandler(null)
        .setMissingDataHandler(null)
        .setMutabilityHandler(null)
        .setSqlHandler(null)
        .setPersistenceHandler(null)
        .setRepresentationHandler(null)
        .setReshapingHandler(null)
        .setSchemaHandler(null)
        .setStreamingDataHandler(null)
        .setTimeSeriesHandler(null)
        ;
      // @formatter:on
    }
docs: This will be called via the {@link ISupportPhantomReference} interface if this object was registered under
  {@link PhantomReference}.