@SubscribeEvent
    public void populateChunk(PopulateChunkEvent.Pre event) {
        Chunk chunk = event.world.getChunkFromChunkCoords(event.chunkX, event.chunkZ);
        for (ExtendedBlockStorage storage : chunk.getBlockStorageArray()) {
            if (storage != null) {
                for (int x = 0; x < 16; ++x) {
                    for (int y = 0; y < 16; ++y) {
                        for (int z = 0; z < 16; ++z) {
                            if (storage.getBlockByExtId(x, y, z) == Blocks.stone) {
                                storage.func_150818_a(x, y, z, Blocks.brick_block);
                            }
                        }
                    }
                }
            }
        }
    }