public void a(World world, int i, int j, int k, Random random) {
        if (!world.isStatic) {
            super.a(world, i, j, k, random);
            if (world.getLightLevel(i, j + 1, k) >= 9 && random.nextInt(30) == 0) {
                // CraftBukkit start
                this.b(world, i, j, k, random);
                if (world.getData(i, j, k) != this.id) {
                    // If growing fails, requeue on half the time
                    world.queueBlockTick(i, j, k, this.id, World.getTicksForChance(1D/30, 1));
                    return;
                }
            }
        }
        this.queueBlockTick(world, i, j, k);
    }