code: function sasSample () {
    console.log('Starting sasSample.');
  
    // Create the container.
    createContainer(function () {
  
      // Create a blob.
      createBlob( function () {
  
        // Create a shared access signature and use it to download the blob just created.
        downloadBlobUsingSharedAccessSignature(function () {
  
          // Add Shared Access policies to the container
          createPolicies(function () {
  
            // Use the read policy just created
            usePermissions(function () {
  
              // Delete the container
              deleteContainer(function () {
                console.log('Ending sasSample.');
              });
            });
          });
        });
      });
    });
  }
docs: optionally set a proxy /*var proxy = {
  protocol: 'http:',
  host: '127.0.0.1',
  port: 8888
  };
  
  blobService.setProxy(proxy);
  blobService2.setProxy(proxy);