/**
* Helper method to inform the client, that new workspace information is available
*
* @return void
*/
protected function updateWorkspaceInfo()
{
$nodeService = new NodeService();
$updateWorkspaceInfo = new UpdateWorkspaceInfo();
$updateWorkspaceInfo->setDocument($nodeService->getClosestDocument($this->getSubject()));
$this->feedbackCollection->add($updateWorkspaceInfo);
}