{
    "variants": {
        "": [
            { "model": "block/bookshelf" },
			{ "model": "block/bookshelf_01" },
			{ "model": "block/bookshelf_02" },
			{ "model": "block/bookshelf_03" },
			{ "model": "block/bookshelf_04" },
			{ "model": "block/bookshelf_05" },
			{ "model": "block/bookshelf_06" }
        ]
    }
}