seq property
Seq is this command's position in the session's log — the same monotonic number every other turn is ordered by, so a command sits in the transcript where it was issued. Send the highest one you applied back as after and it is never redelivered.
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? seq;