/// <summary>
 ///     Create storage blob.
 ///     Note: storage container name should be in lower case
 /// </summary>
 /// <param name="service"></param>
 /// <param name="blobName"></param>
 /// <param name="containerName"></param>
 /// <returns></returns>
 public CloudBlockBlob CreateBlob(StorageAccount service, string blobName, string containerName = "")
 {
     return(service.CreateBlob(blobName, containerName));
 }