fitted property
Fitted is the winning shape FITTED over your own history and published as one of your organisation's own model values. Name its address on PUT /v1/risk/state/model and the winning shape becomes the model you are running. It is why this op answers something you can act on. A trial keeps counts and not the model that produced them, so a report without this named a shape nobody could install — and the adoption path refused a shape change besides. Fitting the winner once is a sixty-fifth pass over the same history; keeping all sixty-four fitted models resident instead would cost a measured 21 MiB per run for sixty-three shapes nobody adopts. Two things about it are worth knowing before you adopt it. Its realised rate can differ from the winner's above, because the ranking measures every candidate under one fixed reference geometry so the comparison is a comparison, while this is fitted under YOUR geometry — the one an outsider cannot predict. And it has learned the window this search replayed and nothing older, so adopting it trades history for fit.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
RiskModelValue? fitted;