MyFirstPrevalentSystem.Task.Validate C# (CSharp) Method

		public void Validate()
		{
			if (null == _summary || 0 == _summary.Length)
			{
				throw new ApplicationException("Task.Summary is required!");
			}
		}

        public void AddTask(Task task)
        {
            task.Validate();

            task.ID = _nextTaskID++;

            // we must use PrevalenceEngine.Now as our clock
            // if we want our system to be deterministic
            //
            task.DateCreated = PrevalenceEngine.Now;

            _tasks.Add(task.ID, task);
        }