keys property
Keys is how many designations that load carried. Zero from a publisher who designates somebody is a failed load wearing a successful one's clothes, and belongs in Refusal instead.
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
int? keys;