*/
String getGtnGroupId(String ns, String pLIDMId) {
Fqn nodeFqn = getFqn(ns, NODE_GTN_GROUP_ID, pLIDMId);
Node node = getNode(nodeFqn);
if (node != null) {
String id = (String) node.get(NODE_OBJECT_KEY);
if (log.isTraceEnabled() && id != null) {
log.trace(this.toString() + "GateIn group id found in cache. PLIDM group id: " + pLIDMId + "GateIn group id: "
+ id + ";namespace=" + ns);
}