public function user_getTreeList()
    {
        $pidList = $this->getTSFE()->register['tt_content_shortcut_recursive']
            ? $this->cObj->getTreeList(
                $this->cObj->data['uid'],
                $this->getTSFE()->register['tt_content_shortcut_recursive']
            )
            : '';
        $this->getTSFE()->register['pidInList'] = trim($this->cObj->data['uid'] . ',' . $pidList, ',');
    }