ublic class CustomZombie extends EntityZombie {

    public CustomZombie(org.bukkit.World world)
    {
        super(((CraftWorld)world).getHandle());
    }

    @Override
    public void m() {}


    public void addPath(Location to, float speed) {
        goalSelector.a(4, new PathfinderGoalWalkTo(this, to, speed));
    }

   private static Object getPrivateField(String fieldName, Class clazz, Object object)
    {
        Field field;
        Object o = null;

        try
        {
            field = clazz.getDeclaredField(fieldName);

            field.setAccessible(true);

            o = field.get(object);
        }
        catch(NoSuchFieldException e)
        {
            e.printStackTrace();
        }
        catch(IllegalAccessException e)
        {
            e.printStackTrace();
        }

        return o;
    }

    public enum EntityTypes
    {

        CUSTOM_ZOMBIE("Zombie", 54, CustomZombie.class);

        private EntityTypes(String name, int id, Class<? extends Entity> custom)
        {
            addToMaps(custom, name, id);
        }

        public static void spawnEntity(Entity entity, Location loc)
        {
            entity.setLocation(loc.getX(), loc.getY(), loc.getZ(), loc.getYaw(), loc.getPitch());
            ((CraftWorld)loc.getWorld()).getHandle().addEntity(entity);
        }

        private static void addToMaps(Class clazz, String name, int id)
        {

            ((Map)getPrivateField("c", net.minecraft.server.v1_8_R3.EntityTypes.class, null)).put(name, clazz);
            ((Map)getPrivateField("d", net.minecraft.server.v1_8_R3.EntityTypes.class, null)).put(clazz, name);
            ((Map)getPrivateField("f", net.minecraft.server.v1_8_R3.EntityTypes.class, null)).put(clazz, Integer.valueOf(id));

        }

    }



}