/**
  * Create the Primo Central backend.
  *
  * @param Connector $connector Connector
  *
  * @return Backend
  */
 protected function createBackend(Connector $connector)
 {
     $backend = new Backend($connector, $this->createRecordCollectionFactory());
     $backend->setLogger($this->logger);
     $backend->setQueryBuilder($this->createQueryBuilder());
     return $backend;
 }