{
  "variants": {
    "half=bottom,subtype=subtype0": {"model": "half_slab_oak"},
    "half=top,subtype=subtype0": {"model": "upper_slab_oak"},
    "half=bottom,subtype=subtype1": {"model": "half_slab_birch"},
    "half=top,subtype=subtype1": {"model": "upper_slab_birch"}
  }
}