This is an instance of FolderType and is used to organize multiple available results in the underlying system which the server decides to expose in the Address Space. It may contain no results if the server does not expose results in the Address Space at all or if no available result matches the criteria for exposure in the Address Space.
<ResultVariable> is an optional placeholder for ResultType instances.
Note: The organization of the <ResultVariable> instances in the Results folder instance is application specific. The semantics and rules are not defined in this version of the specification.