{
 "variants": {
 "normal": [
 { "model": "bookshelf", "weight": 5 },
 { "model": "bookshelf/bookshelf1", "weight": 2 },
 { "model": "bookshelf/bookshelf2", "weight": 2 },
 { "model": "bookshelf/bookshelf3", "weight": 2 },
 { "model": "bookshelf/bookshelf4", "weight": 2 },
 { "model": "bookshelf/bookshelf5", "weight": 1 },
 { "model": "bookshelf/bookshelf6", "weight": 1 },
 { "model": "bookshelf/bookshelf7", "weight": 1 },
 { "model": "bookshelf/bookshelf8", "weight": 1 }
 ]
 }
}