listedConfigItems, err := iamOS.listAllIAMConfigItems(ctx)
	if err != nil {
		return fmt.Errorf("unable to list IAM data: %w", err)
	}
	if took := time.Since(listStartTime); took > maxIAMLoadOpTime {
		var s strings.Builder
		for k, v := range listedConfigItems {
			s.WriteString(fmt.Sprintf("    %s: %d items\n", k, len(v)))
		}

	groupSet := set.NewStringSet()
	if iamOS, ok := store.IAMStorageAPI.(*IAMObjectStore); ok {
		listedConfigItems, err := iamOS.listAllIAMConfigItems(ctx)
		if err != nil {
			return nil, err
		}
		if store.getUsersSysType() == MinIOUsersSysType {
			groupsList := listedConfigItems[groupsListKey]
			for _, item := range groupsList {