interface SummaryController id "async:controller" revision "async:controller@1" {
  operation refresh id "async:refresh" : record { operationId: string; } -> string {
    call id "async:refresh:call" execution remote;
  }
  operation processPending id "async:process-pending" : optional<record { operationId: string; }> -> unit {
    call id "async:process-pending:call" execution remote;
  }
}