List<Photo> oldPhotoList = existingProperty.getPhotoList();
        List<Photo> newPhotoList = property.getPhotoList();

        if (oldPhotoList != null) {
            oldPhotoList.forEach(photo -> photo.setProperty(null));
            oldPhotoList.clear();
        }
        if (newPhotoList != null) {
            newPhotoList.forEach(photo -> photo.setProperty(existingProperty));
        }
        existingProperty.setPhotoList(newPhotoList);