public async Task CancelRunNotExist()
        {
            var task = await _tasksApi.CreateTaskEveryAsync(GenerateName("it task"), TaskFlux, "1s", _organization);

            Thread.Sleep(5_000);

            var runs = await _tasksApi.GetRunsAsync(task, null, null, 1);

            Assert.IsNotEmpty(runs);

            var message = Assert.ThrowsAsync <HttpException>(async() => await _tasksApi.CancelRunAsync(runs[0]))
                          .Message;

            Assert.AreEqual("failed to cancel run: run not found", message);
        }