boolean changed = selectionAttributes.isDefined(name); selectionAttributes.putAttribute(name, value);
boolean changed = selectionAttributes.contains(name); selectionAttributes.put(name, value);
    public void setSelectionAttribute(String name, String value) {        boolean changed = selectionAttributes.isDefined(name);        selectionAttributes.putAttribute(name, value);        if (changed)            reload(ReloadManager.RELOAD_STYLE);    }