parentUID = pUser.getID();
// create a second user 'below' the first user and make it group-admin
p = getTestPrincipal();
String pw = buildPassword(p);
Credentials creds = buildCredentials(p.getName(), pw);
User user = userMgr.createUser(p.getName(), pw, p, pUser.getNode().getPath());
uID = user.getID();
uPath = ((UserImpl) user).getNode().getPath();
// make other user a group-administrator: