error property
Error is the exact reason the last publish attempt failed — the honest record behind a "failed" status, never a faked success.
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? error;