currentVersion property
CurrentVer is the version number served as current. It always equals versions: numbering is dense from 1, and deleting a prompt takes its whole history with it rather than leaving a gap.
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? currentVersion;