releaseId property
ReleaseID is derived from a DIGEST of the release's own manifest, so identical content is the same release and a release can never be confused with another one. Activating an older id IS the rollback.
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? releaseId;