@SubscribeEvent
 public void onWorldLoad(WorldEvent.Load e) {
   if (e.world.provider.dimensionId == 1 && e.world instanceof WorldServer) {
     WorldServer world = (WorldServer) e.world;
     world.chunkProvider =
         world.theChunkProviderServer = new ChunkProviderHardcoreEndServer(world);
   }
 }