/// <summary>
 /// This method only flags orphaned rows for the CleanupFilesDeleteRowsAsync
 /// method that will actually delete the rows from the database.
 /// </summary>
 private async Task CleanupFilesSetFlagAsync(CancellationToken cancellationToken)
 {
     try
     {
         SnTrace.Database.Write(SnMaintenance.TracePrefix + "Cleanup files: setting the IsDeleted flag...");
         await BlobStorage.CleanupFilesSetFlagAsync(cancellationToken).ConfigureAwait(false);
     }
     catch (Exception ex)
     {
         SnLog.WriteWarning("Error in file cleanup set flag background process. " + ex, EventId.RepositoryRuntime);
     }
 }