version property
Version identifies the authored playbook this journey was projected from, so two orgs on different playbooks can be told apart. It is the blueprint's own version string, not the store's numeric revision.
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? version;