{
    "variants": {
        "type=bottom": [ 
            { "model": "block/slabs/oak_bottom_1" },
            { "model": "block/slabs/oak_bottom_2" },
            { "model": "block/slabs/oak_bottom_3" }
        ],
        
        "type=top":  [
            { "model": "block/slabs/oak_top_1" },
            { "model": "block/slabs/oak_top_2" },
            { "model": "block/slabs/oak_top_3" }
        ],
        
        "type=double": [ 
            { "model": "block/slabs/oak_double_1" },
            { "model": "block/slabs/oak_double_2" },
            { "model": "block/slabs/oak_double_3" }
        ]
    }
}