type IAMObjectStore struct {
	// Protect access to storage within the current server.
	sync.RWMutex

	*iamCache

	usersSysType UsersSysType

	objAPI ObjectLayer
}

func newIAMObjectStore(objAPI ObjectLayer, usersSysType UsersSysType) *IAMObjectStore {
	return &IAMObjectStore{
		iamCache:     newIamCache(),
		objAPI:       objAPI,
		usersSysType: usersSysType,
	}
}

		)
		if env.Get("_MINIO_IAM_SINGLE_FLIGHT", config.EnableOn) == config.EnableOn {
			group = &singleflight.Group{}
			policy = &singleflight.Group{}
		}
		sys.store = &IAMStoreSys{
			IAMStorageAPI: newIAMObjectStore(objAPI, sys.usersSysType),
			group:         group,
			policy:        policy,
		}
	} else {
		sys.store = &IAMStoreSys{IAMStorageAPI: newIAMEtcdStore(etcdClient, sys.usersSysType)}
	}
}