box.setMinMax(-1, 2, 0, 0, 6, 0).fill();
box.offsetMinMax(0, 0, 6, 0, 0, 6).fill();
box.offsetMinMax(5, 0, -6, 5, 0, -6).fill();
box.offsetMinMax(0, 0, 6, 0, 0, 6).fill();
box.setMinMax(-1, 2, 0, -1, 6, 1).fill();
box.offsetMinMax(0, 0, 5, 0, 0, 5).fill();
box.offsetMinMax(6, 0, -5, 6, 0, -5).fill();
box.offsetMinMax(0, 0, 5, 0, 0, 5).fill();
// Connect the corner columns horizontally at the ceiling to create gateways
box.setMinMax(1, 6, 0, 3, 6, 0).fill();
picker.setOuterInnerMaterials(VanillaMaterials.NETHER_BRICK_FENCE, VanillaMaterials.NETHER_BRICK_FENCE);