private void addGotoOp(int gotoOp)
    {
        byte[] array = itsData.itsICode;
        int top = itsICodeTop;
        if (top + 3 > array.length) {
            array = increaseICodeCapasity(3);
        }
        array[top] = (byte)gotoOp;
        // Offset would written later
        itsICodeTop = top + 1 + 2;
    }