if ( attributes.isDefined(name) ) { String value = attributes.removeAttribute(name);
if (attributes.contains(name)) { String value = attributes.remove(name);
    public String removeAttribute(String name) {        if ( attributes.isDefined(name) ) {            String value = attributes.removeAttribute(name);            reload(ReloadManager.RELOAD_STYLE);            return value;        }        return null;    }