map.put("cancelSelection", null);
map.put("cancelSelection", getCancelSelectionAction());
  protected ActionMap createActionMap()  {    ActionMap map = new ActionMap();    map.put("approveSelection", getApproveSelectionAction());    map.put("cancelSelection", null);  // FIXME: implement this one    map.put("Go Up", getChangeToParentDirectoryAction());    return map;  }