private async Task RemoveExpiredContent(IContentStorage contentStorage, CancellationToken cancellationToken)
 {
     await foreach (var page in contentStorage.GetAll(options.ContentCategory, cancellationToken))
     {
         foreach (var item in page.Where(x => x.Timestamp.Add(options.ContentSavePeriod) < DateTimeOffset.UtcNow))
         {
             await contentStorage.Delete(item.Id, options.ContentCategory, cancellationToken);
         }
     }
 }