code: @Override
  	public void onAfterSave(Object source, DBObject dbo) {
  		this.persister.onAfterSave(source, dbo);
  	}
docs: Pass the Save event to the MongoPersister to cascade to the StateDocument
  
  (non-Javadoc)
  @see org.springframework.data.mongodb.core.mapping.event.AbstractMongoEventListener#onBeforeConvert(java.lang.Object)