code: private ClosableIterator<NodeWithEmbeddedNodes> multiPropertiesIdFindEntities(EntityKey[] keys, Transaction tx) {
  		String query = getMultiGetQueryCacheQuery( keys );
  		Map<String, Object> params = multiGetParams( keys );
  		StatementResult results = tx.run( query, params );
  		return closableIterator( results );
  	}
docs: /*
  When the id is mapped on several properties