public function setLabel($label)
    {
        parent::setLabel($label);
        if (isset($this->token['captcha'])) {
            if ((strpos($this->token['captcha'], '<img') === false) &&
                ((strpos($this->token['captcha'], ' + ') !== false) ||
                 (strpos($this->token['captcha'], ' - ') !== false) ||
                 (strpos($this->token['captcha'], ' * ') !== false) ||
                 (strpos($this->token['captcha'], ' / ') !== false))) {
                $this->label = $this->label . '(' .
                    str_replace([' * ', ' / '], [' &#215; ', ' &#247; '], $this->token['captcha'] .')');
            } else {
                $this->label = $this->label . $this->token['captcha'];
            }
        }
        return $this;
    }