{
    "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" }
		]
    }
}
