/// <summary>
/// Retrieves upload content.
/// </summary>
/// <param name="tenantId">Tenant identifier.</param>
/// <param name="uploadId">Upload identifer.</param>
/// <param name="storageHierarchy">Location of upload. E.g. { "Uploads" > "Users" }.</param>
/// <param name="unitOfWork">Unit of work.</param>
/// <returns>Upload content.</returns>
public Upload Read(long tenantId, long uploadId, List <string> storageHierarchy, IUnitOfWork unitOfWork = null)
{
// Get main upload details from upload repository
Upload upload = _uploadRepository.Read(tenantId, uploadId, unitOfWork);
// Get upload content from underlying storage and populate upload object
UploadContent uploadContent = _storageService.Read(upload, storageHierarchy, unitOfWork);
upload.Content = uploadContent.Content;
upload.ContentType = uploadContent.ContentType;
// Return upload
return(upload);
}