public enum GsonHelper {

        INSTANCE;

        public static final Gson GSON = new GsonBuilder()
                .disableHtmlEscaping()
                .registerTypeAdapter(Region.class, new RegionAdapter())
                .create();

    }

    public interface Region {

        String getName();

        UUID getUUID();

        Chunk getChunk();

    }

    public class RegionImpl implements Region {


        private final String name;
        private final UUID uuid;
        private final Chunk chunk;

        public RegionImpl(String name, UUID uuid, Chunk chunk) {
            this.name = name;
            this.uuid = uuid;
            this.chunk = chunk;
        }

        String toJson() {
            return GsonHelper.GSON.toJson(this, Region.class);
        }

        Region fromJson(String json) {
            return GsonHelper.GSON.fromJson(json, Region.class);
        }

    }

    public static class RegionAdapter implements JsonSerializer<Region>, JsonDeserializer<Region> {

        @Override
        public Region deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
            final var object = json.getAsJsonObject();
            String name = object.get("name").getAsString();
            UUID uuid = context.deserialize(object.get("uuid"), UUID.class); // implements custom UUIDAdapter and register
            final String worldName = object.get("worldName").getAsString();
            // problem with getting chunk for creating region
            return new RegionImpl(name, uuid, todo: chunk);
        }

        @Override
        public JsonElement serialize(Region src, Type typeOfSrc, JsonSerializationContext context) {
            JsonObject object = new JsonObject();
            object.addProperty("name", src.getName());
            object.add("uuid", context.serialize(src.getUUID(), UUID.class));
            object.addProperty("worldName", src.getChunk().getWorld().getName());
            return object;
        }

    }