branch property
Branch is the ref the run must push its work to, and the ONLY one it is permitted to write: the forge's ref policy refuses anything else from this run's credential. It is decided at dispatch and exists before the work does.
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? branch;