msgs = append(msgs, color.Bold(arn))
	}

	logger.Info(fmt.Sprintf("%s %s", color.Blue("IAM Roles:"), strings.Join(msgs, " ")))
}

// HasWatcher - returns if the IAM system has a watcher to be notified of
// changes.
func (sys *IAMSys) HasWatcher() bool {
	return sys.store.HasWatcher()
}

func (sys *IAMSys) loadWatchedEvent(ctx context.Context, event iamWatchEvent) (err error) {

// layer.
type IAMStoreSys struct {
	IAMStorageAPI

	group  *singleflight.Group
	policy *singleflight.Group
}

// HasWatcher - returns if the storage system has a watcher.
func (store *IAMStoreSys) HasWatcher() bool {
	_, ok := store.IAMStorageAPI.(iamStorageWatcher)
	return ok
}

// GetUser - fetches credential from memory.