Upgrade info for a particular UpgradeCode
Windows Installer references
Choice of elements (min: 0, max: unbounded)
(min: 0, max: unbounded): Nesting a Property element under an Upgrade element has been deprecated. Please nest Property elements in any of the other supported locations.
(min: 0, max: unbounded)
This value specifies the upgrade code for the products that are to be detected by the FindRelatedProducts action.