}
	for _, c := range clusters {
		if patched := p.doPatch(hosts, c); patched != nil {
			l = append(l, patched)
		}
	}
	return l
}

func (p clusterPatcher) insertedClusters() []*cluster.Cluster {
	return envoyfilter.InsertedClusters(p.pctx, p.efw)
}

func (p clusterPatcher) hasPatches() bool {
	return p.efw != nil && len(p.efw.Patches[networking.EnvoyFilter_CLUSTER]) > 0
}