if (model.isClassificationLoaded()) return;
    public void loadClassifications()    {        switch (model.getState()) {            case DISCARDED:            case LOADING_ANNOTATION:             	//return;        }        if (!(model.isClassified())) return;        //model.setClassifications(null);        model.fireClassificationLoading();        model.getParentModel().setStatus(true, TreeViewer.LOADING_TITLE, false);        fireStateChange();    }