Escaped Mutant for Mutator "MethodCallRemoval": --- Original +++ New @@ @@ } /** @psalm-suppress UndefinedDocblockClass */ $typeDefinitions = $container->getParameter('doctrine.dbal.connection_factory.types'); - Assert::isArray($typeDefinitions); + if (!isset($typeDefinitions['client_id'])) { $typeDefinitions['client_id'] = ['class' => ClientIdType::class, 'commented' => null]; }