text: public virtual CountPendingActivityTasksResponse CountPendingActivityTasks(CountPendingActivityTasksRequest request){var options = new InvokeOptions();options.RequestMarshaller = CountPendingActivityTasksRequestMarshaller.Instance;options.ResponseUnmarshaller = CountPendingActivityTasksResponseUnmarshaller.Instance;return Invoke<CountPendingActivityTasksResponse>(request, options);}