Generate the url used to display the measurement result. It is then stored in the variable store.
- At least one processed measurement must exist.
- resGroup: group to store the result url in
- resKey: key to store the result url as
- Stores the result url in a result variable.
- On success: The result URL has successfully been generated and stored.
- On missing result: No processed result has been stored, so the result URL could not be generated.