Neos\Flow\ResourceManagement\PersistentResource::getStream PHP Метод

    public function getStream()
    {
        return $this->resourceManager->getStreamByResource($this);
    }

 /**
  * Publishes the given persistent resource from the given storage
  *
  * @param PersistentResource $resource The resource to publish
  * @param CollectionInterface $collection The collection the given resource belongs to
  * @return void
  */
 public function publishResource(PersistentResource $resource, CollectionInterface $collection)
 {
     $sourceStream = $resource->getStream();
     if ($sourceStream === false) {
         $this->handleMissingData($resource, $collection);
         return;
     }
     $this->publishFile($sourceStream, $this->getRelativePublicationPathAndFilename($resource));
     fclose($sourceStream);
 }