Iterator gmItr = gmCollection.iterator();
while (gmItr.hasNext()) {
childGm = (IGroupMember) gmItr.next();
Utility.logMessage("DEBUG", "DoneWithSelection::execute: About to add child");
// add to parent group
parentGroup.addMember(childGm);
// remove property elements for child gm and clear the Entity Properties cache.
GroupsManagerXML.removePropertyElements (model, childGm, true);
// update parent group
parentGroup.updateMembersAndRenewLock();
// get parent element(s) and add element for child group member