private function trashCollectFiles($data = null)
    {
        $this->debug->groupCollapsed(__METHOD__);
        $data = isset($data)
            ? $data
            : $this->data;
        foreach ($data['pages'] as $info) {
            foreach ($info['values'] as $a) {
                if (\is_array($a) && !empty($a['tmp_name']) && \file_exists($a['tmp_name'])) {
                    $this->debug->log('deleting '.$a['tmp_name']);
                    \unlink($a['tmp_name']);
                }
            }
        }
        $this->debug->groupEnd();
        return;
    }