atts.put(APP_OBJECT_KEY, appObject);
if (appObject != null) { atts.put(APP_OBJECT_KEY, appObject); }
    public void setAttributes(Map atts) {        if (!checkAttributeMap()) {            atts.put(APP_OBJECT_KEY, appObject);        } else {            Object appObj = getAttribute(APP_OBJECT_KEY);            if (appObj != null) {                atts.put(APP_OBJECT_KEY, appObj);            }        }        setAppObject(atts, false);    }