createdAt property
CreatedAt is when the campaign was first stored, in unix seconds. It never changes, including across a full-replace update.
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? createdAt;