code: void getBroadcast() {
  
          CmsCoreProvider.getService().getBroadcast(new AsyncCallback<List<CmsBroadcastMessage>>() {
  
              public void onFailure(Throwable caught) {
  
                  // in case of a status code exception abort, indicates the session is no longer valid
                  if ((caught instanceof StatusCodeException) && (((StatusCodeException)caught).getStatusCode() == 500)) {
                      CmsBroadcastTimer.abort();
                  }
              }
  
              public void onSuccess(List<CmsBroadcastMessage> result) {
  
                  if (result != null) {
                      for (CmsBroadcastMessage message : result) {
                          CmsNotification.get().sendAlert(Type.WARNING, createMessageHtml(message));
                      }
                  }
              }
          });
      }
docs: Requests the latest broadcast.<p>