public function setPageDraftTargetParentPageID($cParentID)
    {
        if ($cParentID != $this->getPageDraftTargetParentPageID()) {
            Section::unregisterPage($this);
        }
        $db = Database::connection();
        $cParentID = intval($cParentID);
        $db->executeQuery('update Pages set cDraftTargetParentPageID = ? where cID = ?', [$cParentID, $this->cID]);
        $this->cDraftTargetParentPageID = $cParentID;

        Section::registerPage($this);
    }