interface CompletionData id "interface:completion-data" revision "interface:completion-data@1" {
  queryable value completedAt id "completedAt" : double {
    get id "completedAt:get"; set id "completedAt:set";
    watch start id "completedAt:watch" stop id "completedAt:stop";
  }
  queryable value scheduledDate id "scheduledDate" : string {
    get id "scheduledDate:get"; set id "scheduledDate:set";
    watch start id "scheduledDate:watch" stop id "scheduledDate:stop";
  }
}