private function articlePictureHandle(Article $incoming, Article $database)
{
if ($incoming->getPicture() == '') {
$incoming->setPicture($database->getPicture());
} else {
$oldImageStorage = $database->getPicture();
$this->imageService->removeResource($oldImageStorage);
$identifier = $this->imageService->storeNetteFile($incoming->getPicture());
$incoming->setPicture($identifier);
}
}