public function onImportPrepare(ImportProcessEvent $event)
 {
     //merge converter only works if context is an array
     if (!$event->getContext() instanceof Import || !$event->getContext()->getRun()) {
         return;
     }
     $this->currentContext = $event->getContext()->getRun()->getContext();
 }
 public function onImportPrepare(ImportProcessEvent $event)
 {
     $event->setContext($this->import);
 }