Villager removing

hey, I'm spawning the villager with that codes but it's despawning when chunk unloaded.

Code:

public class VillagerManager {
      
    public static Field GOAL_FIELD;
    public static Map<Class<? extends Entity>, Integer> ENTITY_CLASS_TO_INT;
    public static Map<Integer, Class<? extends Entity>> ENTITY_INT_TO_CLASS;

    public static void spawnVillager(Location loc) {
        World world = ((CraftWorld) loc.getWorld()).getHandle();
        Entity entity = new SoVillager(world,loc);
        Villager villager = (Villager)entity.getBukkitEntity();
        villager.setRemoveWhenFarAway(false);
        entity.setPosition(loc.getX(), loc.getY(), loc.getZ());
        world.addEntity(entity, SpawnReason.CUSTOM);
        Bukkit.broadcastMessage("test: " + loc.getWorld().getName());
    }
    public MinecraftServer getServer(){
        return ((CraftServer)Bukkit.getServer()).getHandle().getServer();
    }
  
    public static Field getField(Class<?> clazz, String field) {
        Field f = null;
        try {
            f = clazz.getDeclaredField(field);
            f.setAccessible(true);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return f;
    }
  
    @SuppressWarnings("unchecked")
    public static void registerEntityClass(Class<? extends Entity> clazz) {
        GOAL_FIELD = getField(PathfinderGoalSelector.class, "b");
        try {
            Field field = getField(EntityTypes.class, "e");
            ENTITY_INT_TO_CLASS = (Map<Integer, Class<? extends Entity>>) field.get(null);
            field = getField(EntityTypes.class, "f");
            ENTITY_CLASS_TO_INT = (Map<Class<? extends Entity>, Integer>) field.get(null);
        } catch (Exception e) {
            e.printStackTrace();
        }
      
        if (ENTITY_CLASS_TO_INT.containsKey(clazz))
            return;

        Class<?> search = clazz;
        while ((search = search.getSuperclass()) != null && Entity.class.isAssignableFrom(search)) {
            if (!ENTITY_CLASS_TO_INT.containsKey(search)) {
                continue;
            }
            int code = ENTITY_CLASS_TO_INT.get(search);
            ENTITY_INT_TO_CLASS.put(code, clazz);
            ENTITY_CLASS_TO_INT.put(clazz, code);
            return;
        }
        throw new IllegalArgumentException("unable to find valid entity superclass");
    }
  
    public Field getGoalField(){
        return GOAL_FIELD;
    }

Code:

public class SoVillager extends EntityVillager {
  
    public SoVillager(World world, Location loc) {
        super(world);
        VillagerManager.registerEntityClass(SoVillager.class);
        clearGoals(this.goalSelector, this.targetSelector);
      
        this.goalSelector.a(1, new PathfinderGoalRandomLookaround(this));
    }
  
    private void clearGoals(PathfinderGoalSelector... goalSelectors) {
        if (VillagerManager.GOAL_FIELD == null || goalSelectors == null) return;
        for (PathfinderGoalSelector selector : goalSelectors) {
            try {
                List<?> list = (List<?>) VillagerManager.GOAL_FIELD.get(selector);
                list.clear();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
  
    protected String z() {//Idle Sound
        return null;
    }

    protected String bo() {//Hurt Sound
        return null;
    }
  
    protected String bp() {//Death sound
        return null;
    }
  
    @Override
    protected void a(BlockPosition blockposition, Block block) {//No Move Sound
        return;
    }
  
    @Override
    public void move(double d0, double d1, double d2) {
        return;
    }
  
    @Override
    public void g(double x, double y, double z) {
        return;
    }

    @Override
    public boolean isInvulnerable(DamageSource d) {
        return true;
    }
  
    @Override
    public float c(float f) {
        return 0;
    }
  
}

 

What's the class SoVillager?

Postttt