Label l1 = new Label("There are no previously saved actions.");
Label l2 = new Label("There are no saved notes.");
Label l3 = new Label("There are currently no issues.");
acc.addTab(l1, "Actions", new ThemeResource(parent.ICON_URL));
acc.addTab(l2, "Notes", new ThemeResource(parent.ICON_URL));
acc.addTab(l3, "Issues", new ThemeResource(parent.ICON_URL));
acc.getTab(l2).setEnabled(false);