setupLink property
Names the page that guides the developer through the steps by hand of an app, as the front end of the pipeline does (see SetupLink), for the apps of every case: their render hooks and structural rules get the link as a run of that front end gives it (see ContractResult.setupLink).
null, the default, names none, as for a front end without a site,
so the apps of the harness, such as the snapshots of the fixtures,
have no link.
Implementation
final SetupLink? setupLink;