public function processChange(GenericEvent $event)
 {
     $generatedFolder = 'generated';
     $satisFilename = 'satis';
     $this->setContainer($event->getDispatcher()->getContainer());
     $json = $this->getSatisJson();
     $path = realpath($this->get('kernel')->getRootDir() . '/../web');
     if (!is_dir($path . '/' . $generatedFolder)) {
         mkdir($path . '/generated');
     }
     $targetFile = $path . '/' . $generatedFolder . '/' . $satisFilename . '-' . time() . '.json';
     file_put_contents($targetFile, $json);
     copy($targetFile, $path . '/' . $generatedFolder . '/' . $satisFilename . '.json');
     return $this->redirect($this->generateUrl('app_default_index'));
 }