RepositoryEntry re = node.getReferencedRepositoryEntry();
if (re == null) {
// The repository entry has been deleted meanwhile.
this.showError("error.repoentrymissing");
} else {
FeedSecurityCallback callback = new FeedPreviewSecurityCallback();
feedController = uiFactory.createMainController(re.getOlatResource(), ureq, getWindowControl(), callback, course
.getResourceableId(), node.getIdent());
cmcFeedCtr = new CloseableModalController(getWindowControl(), translate("command.close"), feedController.getInitialComponent());
this.listenTo(cmcFeedCtr);
// cmcFeedCtr.insertHeaderCss();