{
    "variants": {
        "": [
            { "model": "block/bookshelf" },
			{ "model": "block/bookshelf2" },
			{ "model": "block/bookshelf3" },
			{ "model": "block/bookshelf4" },
			{ "model": "block/bookshelf5" },
			{ "model": "block/bookshelf6" },
			{ "model": "block/bookshelf7" }
        ]
    }
}