1. ### Authentication Model
2.    $config['auth_mechanism'] = "sso"; # default, other options: ldap, http-auth
3.    $ssoPrefix = "X-CAS-";
4.     $config['sso']['create_users'] = true;
5.     $config['sso']['update_users'] = false;
6.     #$config['sso']['email_attr'] = $ssoPrefix . "email_primary";
7.    $config['sso']['realname_attr'] = $ssoPrefix . "displayName";
8.     $config['sso']['descr_attr'] = $ssoPrefix . "displayName";
9.     $config['sso']['user_attr'] = $ssoPrefix . "User";
10.     $config['sso']['mode'] = "env";
11.     $config['sso']['group_strategy'] = "map";
12.     $config['sso']['group_attr'] = $ssoPrefix . "eduPersonScopedAffiliation";
13.     $config['sso']['group_delimeter'] = ",";
14.     $config['sso']['group_level_map'] = [
15.             'employee@psdept 123' => 5,
16.     ];