shape property
Shape NAMES the model space the masses are only meaningful against, as <family>:<digest> — the KIND of model, and that family's own digest over the feature inventory in order and the detector's geometry parameters. Compare it with the shape on your model state (GET /v1/risk/state): equal means adopting this value restores masses into the space already running, and different means adopting it REPLANTS the model into the space this value describes. That is what makes a searched shape installable. A DIFFERENT FAMILY IS NOT ADOPTABLE AT ALL, and that is the one difference the family term makes here: a different geometry in the same family is a replant, and a different family is a refusal naming both — its masses do not describe your model in any space.
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
String? shape;