@SneakyThrows
    public void restoreWorld(final Arena arena) {
        checkApplicable(arena);

        final Region region = arena.getSettings().getRegion();
        final World world = region.getWorld();

        for (final Player player : world.getPlayers())
            player.kickPlayer("World is getting restored.");

        processedWorlds.add(world);

        final List<Block> blocks = region.getBlocks();

        new ChunkedTask(100_000) {

            final Set<Chunk> chunks = new HashSet<>();

            @Override
            protected void onProcess(final int index) {
                final Block block = blocks.get(index);

                chunks.add(block.getChunk());
            }

            @Override
            protected boolean canContinue(final int index) {
                return index < blocks.size();
            }

            @Override
            protected String getLabel() {
                return "blocks";
            }

            @Override
            protected void onFinish() {
                Common.log("Arena " + arena.getName() + " finished converting blocks to chunks.");

                System.out.println("Auto save: " + world.isAutoSave());

                new ChunkedTask(50) {

                    final List<Chunk> chunksCopy = new ArrayList<>(chunks);

                    @Override
                    protected void onProcess(final int index) {
                        final Chunk chunk = chunksCopy.get(index);

                        System.out.println("Auto save: " + world.isAutoSave());

                        chunk.unload(false);
                        chunk.load(false);
                    }

                    @Override
                    protected boolean canContinue(final int index) {
                        return index < chunksCopy.size();
                    }

                    @Override
                    protected String getLabel() {
                        return "chunks";
                    }

                    @Override
                    protected void onFinish() {
                        Common.log("Arena " + arena.getName() + " finished resetting world " + world.getName() + ".");

                        processedWorlds.remove(world);

                        System.out.println("Auto save: " + world.isAutoSave());
                    }
                }.startChain();
            }
        }.startChain();
    }