@EventHandler
  public void serverLoad(FMLServerStartingEvent event) {
    ChunkManager.getInstance().requestTicket();

    // event.registerServerCommand(new CommandLandBook());

    MapStorage storage = MinecraftServer.getServer().worldServers[0].perWorldStorage;
    chunkSaved = (ChunkSavedData) storage.loadData(ChunkSavedData.class, ChunkSavedData.key);
    if (chunkSaved == null) {
      chunkSaved = new ChunkSavedData();
      storage.setData(ChunkSavedData.key, chunkSaved);
    }
  }
 @EventHandler
 public void serverUnload(FMLServerStoppingEvent event) {
   ChunkManager.getInstance().init();
 }