protected async Task <Guid> AddBlob(string bucket, string fileName, IDictionary <string, object> metadata = null)
{
var path = Path.Combine(Directory.GetCurrentDirectory(), "Resources", fileName);
if (!System.IO.File.Exists(path))
{
throw new FileNotFoundException(path);
}
var blobId = await BlobStorage.AddFileAsync(fileName, System.IO.File.OpenRead(path), "application/octet-stream", bucket, metadata);
return(blobId);
}