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