{
    "variants": {
        "": [
	    { "model": "block/bookshelf", "weight": 3 },
	    { "model": "block/bookshelf1", "weight": 1 },
	    { "model": "block/bookshelf2", "weight": 1 },
	    { "model": "block/bookshelf3", "weight": 1 },
	    { "model": "block/bookshelf4", "weight": 1 }
	]
    }
}
