private async Task UploadMediaContentAsync(string replyToken, string messageId, string blobDirectoryName, string blobName)
{
var stream = await MessagingClient.GetContentStreamAsync(messageId);
var ext = GetFileExtension(stream.ContentHeaders.ContentType.MediaType);
var uri = await BlobStorage.UploadFromStreamAsync(stream, blobDirectoryName, blobName + ext);
await MessagingClient.ReplyMessageAsync(replyToken, uri.ToString());
}
