public function LinkToPendingItems()
    {
        $urlBase = Director::absoluteBaseURL();
        $urlFrag = 'admin/workflows/WorkflowDefinition/EditForm/field';
        $urlInst = $this->getWorkflowInstance();
        return Controller::join_links($urlBase, $urlFrag, 'PendingObjects', 'item', $urlInst->ID, 'edit');
    }