title: How can I implement projects and tasks with DDD
body: <p>I have two entities: Projects and Task. I can implements this object as Value Object but I wonder about the  whether that is good approach? Task might change own title or status and VO should be immutable. How implements this object?</p>
  
  <p>I wonder  about the in Project entity I should add addTask method or I should add Tasks via TaskController?  Whether TaskController is necessary when Project entity has addTask method ?  </p>