public function getExpectedGraphResult($cypher, Client $client) { $transaction = $client->createTransaction(); $transaction->pushQuery('MATCH (n) OPTIONAL MATCH (n)-[r]-() DELETE r,n'); $transaction->pushQuery($cypher); $expectedResult = $transaction->pushQuery('MATCH (n) OPTIONAL MATCH (n)-[r]-() RETURN n,r'); $transaction->rollback(); return $expectedResult; }