csharp

• PlaceOrderUpgrade.cs
  PlaceOrderUpgrade.cs

php

• PlaceOrderUpgrade.php
  PlaceOrderUpgrade.php
• Upgrade.php
  Upgrade.php

python

• Working with upgrade virtual guest dedicated and families
  A few examples on interacting with upgrade virtual guest dedicated and families.
• Upgrade Hardware and Virtual Servers
  A few examples on how to find upgrade prices, actually do the upgrade with a maintenance window, and verify everything.

reference

• SoftLayer_Container_Product_Order_Virtual_Guest_Upgrade
  This is the datatype that needs to be populated and sent to SoftLayer_Product_Order::placeOrder. This datatype has everything required to place an order with SoftLayer.