public function BaseGetMyGroupsById($arg)
 {
     // $arg : IDType (string := integer) or this array
     $this->CheckAndSetHeader(__FUNCTION__);
     $reg_args = $this->getRegularArgs($arg, __FUNCTION__);
     $this->encodeString($reg_args);
     $results = parent::BaseGetMyGroupsById($reg_args);
     $this->methodClose();
     return $this->RetvalConvertArray($results->my_group);
     // returns array of StdClass
 }