public function testIsDeletableMultiReferences()
 {
     $image = new LocalImage();
     $image->updateStorage('image', 'thumb');
     $this->em->persist($image);
     $image = new LocalImage();
     $image->updateStorage('image', 'thumb');
     $this->em->persist($image);
     $this->em->flush();
     $this->assertFalse($this->service->isDeletable('image'));
 }