Persistable snapshot of a Machine produced by jssm!Machine.serialize
and consumed by jssm!deserialize. Carries the current state, the
associated machine data, the recent history (subject to the configured
capacity), and metadata to detect version-skew on rehydration.
Persistable snapshot of a Machine produced by jssm!Machine.serialize and consumed by jssm!deserialize. Carries the current state, the associated machine data, the recent history (subject to the configured capacity), and metadata to detect version-skew on rehydration.