setting properties on a blob

public static async Task SetBlobPropertiesAsync(CloudBlob blob)
{
    try
    {
        Console.WriteLine("Setting Blob Properties ...");

        // Explicitly set the MIME ContentType every time the  
        // properties are updated or the field will be cleared
           blob.Properties.ContentType = "text/plain";
           blob.Properties.ContentLanguage = "en-us";
      
        // Set the Blob's Properties
           await blob.SetPropertiesAsync();
    }
    catch (StorageException e)
    {
        Console.WriteLine("HTTP error code {0}: {1}",
                          e.RequestInformation.HttpStatusCode,
                          e.RequestInformation.ErrorCode);
        Console.WriteLine(e.Message);
        Console.ReadLine();
    }
}