Description:     "publish bucket notifications to MQTT endpoints",
			MultipleTargets: true,
		},
		config.HelpKV{
			Key:             config.NotifyNATSSubSys,
			Description:     "publish bucket notifications to NATS endpoints",
			MultipleTargets: true,
		},
		config.HelpKV{
			Key:             config.NotifyNSQSubSys,
			Description:     "publish bucket notifications to NSQ endpoints",
			MultipleTargets: true,
		},

	}
}

func (ats *allTierStats) addSizes(tiers map[string]tierStats) {
	for tier, st := range tiers {
		ats.Tiers[tier] = ats.Tiers[tier].add(st)
	}
}

func (ats *allTierStats) merge(other *allTierStats) {
	for tier, st := range other.Tiers {
		ats.Tiers[tier] = ats.Tiers[tier].add(st)
	}
}

func (ats *allTierStats) clone() *allTierStats {
	if ats == nil {
		return nil
	}
	dst := *ats