/// <summary>
        /// Creates a test task for use in Scenario tests.
        /// </summary>
        public static void CreateTestTask(BatchController controller, BatchAccountContext context, string jobId, string taskId, string cmdLine = "cmd /c dir /s", int numInstances = 0)
        {
            BatchClient client = new BatchClient(controller.BatchManagementClient, controller.ResourceManagementClient);

            PSMultiInstanceSettings multiInstanceSettings = null;
            if (numInstances > 1)
            {
                multiInstanceSettings = new PSMultiInstanceSettings(numInstances);
                multiInstanceSettings.CoordinationCommandLine = "cmd /c echo coordinating";
            }

            NewTaskParameters parameters = new NewTaskParameters(context, jobId, null, taskId)
            {
                CommandLine = cmdLine,
                MultiInstanceSettings = multiInstanceSettings,
                RunElevated = numInstances <= 1
            };
            
            client.CreateTask(parameters);
        }