Link/GetProvisioningInformation REST API returns structure with two nested Extended attribute

JSON objects returned by a REST API call to Link/GetProvisioningInformation contains task informations with two nested Extended attributes.  As a comparison point, only one Extended attribute may be specified in the task information object when calling Link/PowerShell/AddProvisioningTask, so this seems inconsistent and may be wrong.

Also, as a minor point the Example value for this call is not particularly helpful - it looks like an XML data structure converted to JSON and doesn't reflect the structure of data the call typically returns on a live system.