code: @Override
    public void propagateBpmnError(BpmnError error, ActivityExecution execution) throws Exception {
      super.propagateBpmnError(error, execution);
    }
docs: Overrides the propagateBpmnError method to made it public.
  Is used to propagate the bpmn error from an external task.
  @param error the error which should be propagated
  @param execution the current activity execution
  @throws Exception throwsn an exception if no handler was found