public override void OnNext(IEnvelope value) { if (value == null) { return; } try { TRecord record = CreateRecord(value); if (record != null) { _batch.Add(new Envelope <TRecord>(record, value.Timestamp, value.BookmarkData, value.Position)); } } catch (Exception ex) { _logger?.LogError(ex, "Batching error"); } finally { value.Dispose(); } }