Getting all properties of a WCF-result in SSRS

Getting data from a WCF service in SSRS has been documented enough. It involves XML and specifying which part of the response you want:

GetDataResponse/GetDataResult/Items/Item{PropertyOne,PropertyTwo}

Everything I found specified which properties were requested, but if you just want all properties, omit the parantheses:

GetDataResponse/GetDataResult/Items/Item