    public function transform($attr, $config, $context) {
        // Abort early if we're using relaxed definition of name
        if ($config->get('HTML.Attr.Name.UseCDATA')) return $attr;
        if (!isset($attr['name'])) return $attr;
        $id = $this->confiscateAttr($attr, 'name');
        if ( isset($attr['id']))   return $attr;
        $attr['id'] = $id;
        return $attr;
    }
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.