DefaultWorkerLease newUnmanagedLease() {
            return new DefaultWorkerLease("unmanaged lease", coordinationService, this, new LeaseHolder(1));
        }
    }

    private class DefaultWorkerLease extends DefaultLease implements WorkerLeaseCompletion, WorkerLease {
        public DefaultWorkerLease(String displayName, ResourceLockCoordinationService coordinationService, ResourceLockContainer owner, LeaseHolder parent) {