func (list *TargetList) List(region string) []ARN {
	list.RLock()
	defer list.RUnlock()

	keys := make([]ARN, 0, len(list.targets))
	for k := range list.targets {
		keys = append(keys, k.ToARN(region))
	}

	return keys
}

// TargetMap - returns available targets.
func (list *TargetList) TargetMap() map[TargetID]Target {
	list.RLock()
	defer list.RUnlock()

		// This list is only meant for external targets, filter
		// this out pro-actively.
		if !strings.HasPrefix(targetID.ID, "httpclient+") {
			arns = append(arns, targetID.ToARN(region).String())
		}
	}

	return arns
}

// Loads notification policies for all buckets into EventNotifier.
func (evnot *EventNotifier) set(bucket string, meta BucketMetadata) {