Mine

object(UserGroup)#31 (6) {  ["member_ids:private"]=>  NULL  ["permissions:private"]=>  NULL  ["fields:protected"]=>  array(2) {    ["id"]=>    string(1) "2"    ["name"]=>    string(9) "anonymous"  }  ["newfields:protected"]=>  array(0) {  }  ["unsetfields:protected"]=>  array(1) {    ["id"]=>    int(0)  }  ["properties_loaded:private"]=>  array(2) {    ["id"]=>    bool(true)    ["name"]=>    bool(true)  }}