ViewContext conceptsViewContext = new ViewContext();
conceptsViewContext.setApp(app);
conceptsViewContext.setContextPage(this);
conceptsViewContext.setPage(this);
conceptsViewContext.setWicketId("conceptListPanel");
ConceptListPanel conceptListPanel = new ConceptListPanel(
conceptsModelContext, conceptsViewContext);
if (model == null) {
conceptListPanel.setVisible(false);
}
add(conceptListPanel);
ModelContext presentationSlideListModelContext = new ModelContext();
presentationSlideListModelContext.setDomainModel(app