public IActionResult Get(string accessId, string id)
        {
            var filePath = _securedFilePathProvider.GetFileIdForUseOnceAccessId(accessId);

            if (!string.IsNullOrEmpty(filePath))
            {
                var fileContents = System.IO.File.ReadAllBytes(filePath);
                return(new FileContentResult(fileContents, "application/octet-stream"));
            }
            return(new StatusCodeResult(401));
        }