test.cs

public async Task DoWork(CancellationToken cancellationToken)
{
  while (!cancellationToken.IsCancellationRequested)
  {
    ProcessingRequest request = new ProcessingRequest(null);

    if (request.Id == null)
    {
      logger.LogInformation("No request found in queue");
      await Task.Delay(1000, cancellationToken);
      continue;
    }
    else
    {
      TextControlProcessing.Merge(request);
      logger.LogInformation("Request found - executing worker");
    }

  }
}