if (currentFrame.getInput() instanceof WorkingSetModel) return;
	private void saveCurrentFrame(IMemento memento) {        FrameAction action = fActionSet.getUpAction();        FrameList frameList= action.getFrameList();		if (frameList.getCurrentIndex() > 0) {			TreeFrame currentFrame = (TreeFrame) frameList.getCurrentFrame();			IMemento frameMemento = memento.createChild(TAG_CURRENT_FRAME);			currentFrame.saveState(frameMemento);		}	}