if (left) {
box.setMinMax(0, 3, 1, 0, 4, 1);
} else {
box.setMinMax(4, 3, 1, 4, 4, 1);
}
box.fill();
box.offsetMinMax(0, 0, 2, 0, 0, 2).fill();
// Second wall
picker.setOuterInnerMaterials(VanillaMaterials.NETHER_BRICK, VanillaMaterials.NETHER_BRICK);
if (left) {
box.setMinMax(4, 2, 0, 4, 5, 0).fill();