protected void loadContent() {
   if (wfEngine_ == null) {
     wfEngine_ = LocalWorkflowRuntimeEngineFactory.getRuntimeEngine();
     taskService_ = wfEngine_.getLocalTaskService();
     ObservableList<LocalTask> tasks =
         new ObservableListWrapper<LocalTask>(taskService_.getOpenOwnedTasks(user));
     taskTable.setItems(tasks);
   } else {
     refreshContent();
   }
 }
 private void refreshContent() {
   taskTable.getItems().clear();
   taskTable.getItems().addAll(taskService_.getOpenOwnedTasks("alejandro"));
 }