* @param smBean the session manager config bean
* HERCULES:add
*/
private String getPersistenceFrequency(SessionManager smBean) {
String persistenceFrequency = null;
ManagerProperties mgrBean = smBean.getManagerProperties();
if (mgrBean != null && mgrBean.sizeWebProperty() > 0) {
WebProperty[] props = mgrBean.getWebProperty();
for (WebProperty prop : props) {
String name = prop.getAttributeValue(WebProperty.NAME);
String value = prop.getAttributeValue(WebProperty.VALUE);
if (name == null || value == null) {
throw new IllegalArgumentException(