done property
Done counts steps that are FINISHED — done and skipped alike, since a step the org deliberately passed over is not still owed. It therefore rises when somebody skips, which is the intended reading of a checklist.
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? done;