status property
Status moves the session to running, paused, done or error. A session that has already finished refuses any change with 409 — done and error are monotonic — and moving INTO one stamps the end time. This is the surface REPORTING what happened; a control command never writes it.
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? status;