cursor property
Cursor is the row id to pass back as since for the next page. It is the last message's id, or the requested cursor when the page is empty.
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? cursor;