blackboard.closeTransaction(false);
blackboard.closeTransactionDontReset();
  private void rescindAssessReadiness() {    blackboard.openTransaction();    for (Iterator taskIt = assessReadinessSubscription.iterator(); taskIt.hasNext();) {      Task task = (Task) taskIt.next();      blackboard.publishRemove(task);    }    blackboard.closeTransaction(false);    updateLabel();  }