sessionId property
SessionID is the run's handle: its durable record, and the id its live progress streams under at /v1/agents/sessions/{sessionId}/stream. Every later question about this run is asked with 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? sessionId;