[
  {
    "type": "mapgen",
    "method": "json",
    "nested_mapgen_id": "nether_glass_impassable_corner",
    "object": { "mapgensize": [ 2, 2 ], "set": [ { "point": "terrain", "id": "t_nether_glass_wall", "x": [ 0, 1 ], "y": [ 0, 1 ] } ] }
  },
  {
    "type": "mapgen",
    "method": "json",
    "om_terrain": [ "nether_glass" ],
    "object": { "fill_ter": "t_nether_glass_floor" }
  },
  {
    "type": "mapgen",
    "method": "json",
    "om_terrain": [ "nether_glass_deep" ],
    "object": {
      "fill_ter": "t_nether_glass_floor",
      "place_nested": [
        { "else_chunks": [ "nether_glass_impassable_corner" ], "x": 0, "y": 0, "neighbors": { "north_west": "nether_glass" } },
        {
          "else_chunks": [ "nether_glass_impassable_corner" ],
          "x": 22,
          "y": 0,
          "neighbors": { "north_east": "nether_glass" }
        },
        {
          "else_chunks": [ "nether_glass_impassable_corner" ],
          "x": 22,
          "y": 22,
          "neighbors": { "south_east": "nether_glass" }
        },
        {
          "else_chunks": [ "nether_glass_impassable_corner" ],
          "x": 0,
          "y": 22,
          "neighbors": { "south_west": "nether_glass" }
        }
      ]
    }
  },
  {
    "type": "mapgen",
    "method": "json",
    "om_terrain": [ "nether_glass_impassable" ],
    "object": { "fill_ter": "t_nether_glass_wall" }
  }
]
