}
	return dedup.UnsortedList()
}

type ClustersByNetwork map[string]Clusters

func (c ClustersByNetwork) Networks() []string {
	out := make([]string, 0, len(c))
	for n := range c {
		out = append(out, n)
	}
	sort.Strings(out)
	return out
}

// ByNetwork returns a map of network name to a subset of clusters
func (c Clusters) ByNetwork() ClustersByNetwork {
	out := make(ClustersByNetwork)
	for _, cc := range c {

func (e *Environment) IsMultiNetwork() bool {
	return len(e.ClustersByNetwork()) > 1
}

func (e *Environment) AllClusters() cluster.Clusters {
	out := make([]cluster.Cluster, 0, len(e.clusters))
	out = append(out, e.clusters...)
	return out
}

func (e *Environment) Clusters() cluster.Clusters {
	return e.AllClusters().MeshClusters()
}