Please, help with advice :)

How can we use MethodInterception aspect with [Field]?

It seems, that our aspect replaces DO.

Aspect:

[Serializable]
    public class SetAsParentAttribute : MethodInterceptionAspect
    {
        public override void  OnInvoke(MethodInterceptionArgs args)
        {
            ((BaseEntity)args.Instance).ParentEntity = (BaseEntity)args.Arguments[0];
        }
    }

Entities:

[Serializable]
    [HierarchyRoot(InheritanceSchema = InheritanceSchema.ConcreteTable)]
    public abstract class BaseEntity : Entity
    {
        [Field, Key]
        public int Id { get; private set; }

    [Field(Nullable = false)]
    public int IdSection { get; private set; }

    [Field]
    public BaseEntity ParentEntity { get; set; }
}

public class NewsPage : BaseEntity
    {
        [Field]
        public string Test { get; set; }
    [Field]
    public EntitySet<OneNewsPage> ChildEntitySetNews { get; set; }

}

public class OneNewsPage : BaseEntity
    {
        public OneNewsPage(int idSection)
            : base(idSection)
        {
        }
    [Field]
    public DateTime DateTime { get; set; }

    [Field]
    public string ShortText { get; set; }

    [Field]
    [Association(PairTo = "ChildEntitySetNews", OnOwnerRemove = OnRemoveAction.Clear, OnTargetRemove = OnRemoveAction.Cascade)]

    public NewsPage Parent { get; [SetAsParent] set; }

}

Generated code:

[Field]
    [Association(OnOwnerRemove = OnRemoveAction.Clear, OnTargetRemove = OnRemoveAction.Cascade, PairTo = "ChildEntitySetNews")]
    public NewsPage Parent
    {
      [DebuggerNonUserCode] get
      {
        return this.GetFieldValue<newspage>("Parent");
      }
      [DebuggerNonUserCode] private set
      {
        MethodInterceptionArgsImpl interceptionArgsImpl = new MethodInterceptionArgsImpl((object) this, (Arguments) new Arguments<newspage>()
        {
          Arg0 = value
        });
        interceptionArgsImpl.Method = OneNewsPage.\u003C\u003EzAspects.m5;
        interceptionArgsImpl.TypedBinding = (MethodBinding) OneNewsPage.\u003Cset_Parent\u003EcBinding.singleton;
        OneNewsPage.\u003C\u003Ez__Aspects.a5.OnInvoke((MethodInterceptionArgs) interceptionArgsImpl);
      }
    }

So there is no this.GetFieldValue in Set.

What should we do?