public function save()
 {
     if ($this->isOAuthAuthenticate() && array_key_exists(self::IS_GOOGLE_CALENDAR_OAUTH_KEY_REVOKE, $this->values)) {
         $isDelete = (bool) $this->values[self::IS_GOOGLE_CALENDAR_OAUTH_KEY_REVOKE];
         unset($this->values[self::IS_GOOGLE_CALENDAR_OAUTH_KEY_REVOKE]);
         if ($isDelete) {
             $con = opDoctrineQuery::getMasterConnection();
             $con->beginTransaction();
             try {
                 $this->opCalendarOAuth->getClient()->revokeToken();
                 opCalendarPluginToolkit::deleteMemberGoogleCalendar($this->member);
                 $con->commit();
             } catch (Exception $e) {
                 $con->rollback();
                 return false;
             }
         }
     }
     return parent::save();
 }