kind property
Kind is the judged entity's type, from the closed set: account, agent, merchant, payout, person, session or transaction. One outside it is refused rather than answered unlabelled, because it could only ever match nothing and the caller would read a real absence into a typo.
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? kind;