/// <summary>
/// Decides further stgategy or behaviour of an object, either
/// it would be AgileTodoTask or NormalTodoTask
/// </summary>
/// <param name="toDoTaskStrategy">Either AgileTodoTask or NormalTodoTask </param>
/// <returns></returns>
public void SetToDoTaskStrategy(ToDoTaskStrategy toDoTaskStrategy)
{
this._toDoTaskStrategy = toDoTaskStrategy;
}