appId property
AppID is the brand this token runs under ("hanzo" | "lux" | "zoo"). The engine refuses a token whose app_id is not the one it was built for.
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? appId;