{
    "variants": {
        "": [
            { "model": "block/bookshelf" },
			{ "model": "block/bookshelf/1" },
			{ "model": "block/bookshelf/2" },
			{ "model": "block/bookshelf/3" },
			{ "model": "block/bookshelf/4" },
			{ "model": "block/bookshelf/5" },
			{ "model": "block/bookshelf/6" }
        ]
    }
}