allPolicies := set.NewStringSet()
	for _, sri := range sris {
		for b := range sri.Buckets {
			allBuckets.Add(b)
		}
		for u := range sri.UserInfoMap {
			allUsers.Add(u)
		}
		for g := range sri.GroupDescMap {
			allGroups.Add(g)
		}
		for p := range sri.Policies {
			allPolicies.Add(p)
		}
		for u := range sri.UserPolicies {
			allUserWPolicies.Add(u)
		}