@property
def cluster_size(self):
    clusters = []
    plans = Plan.objects.filter(region=self)
    for plan in plans:
        from kubeops_api.models.cluster import Cluster
        cs = Cluster.objects.filter(plan=plan)
        for c in cs:
            clusters.append(c)
    return len(clusters)
@property
def cluster_size(self):
    clusters = []
    plans = Plan.objects.filter(region=self)
    for plan in plans:
        from kubeops_api.models.cluster import Cluster
        cs = Cluster.objects.filter(plan=plan)
        for c in cs:
            clusters.append(c)
    return len(clusters)