public override Task CalculateAsync(ExpiryManager.ExpiryCalculationArgs e)
        {
            //This line should throw
            var grain = GrainClient.GrainFactory.GetGrain <ICouchBaseStorageGrain>(Guid.NewGuid());

            e.SetExpiry(TimeSpan.FromSeconds(30));
            return(TaskDone.Done);
        }
 protected override Task PerformCalculationAsync(ExpiryManager.ExpiryCalculationArgs e, StorageData model)
 {
     e.SetExpiry(TimeSpan.FromSeconds(30));
     return(TaskDone.Done);
 }