Feature Request Support [Optional] for DynamicBuffer<T> fields in Aspects

The attribute `[OptionalAttribute]` seems to be ignored in fields that reference dynamic buffers in aspects.
This makes quite frustrating to work with aspects when you want to optionally include a dynamic buffer.

 

You can implement Optional DynamicBuffer on Aspect using Enableable feature here is example I've tested:

Code (CSharp):

1. public struct  UnitOnTile: IBufferElementData, IEnableableComponent{
2.         public Entity Value;
3. }
4. public override void Bake(TileAuthoring authoring){
5.         var entity = GetEntity(TransformUsageFlags.Dynamic);
6.         AddBuffer<UnitOnTile>(entity);
7.         SetComponentEnabled<UnitOnTile>(entity, true);  // or false
8. }
9. public readonly partial struct TileAspect : IAspect{
10.         [Optional] // or not
11.         readonly DynamicBuffer<UnitOnTile> _unitsOnTile;
12. }
13. // Spawn 400 Tiles by another system
14. TestSystem.OnUpdate(){
15.         int i = 0;
16.         foreach (TileAspect tile in SystemAPI.Query<TileAspect>()){
17.                 i++;}
18.         Debug.Log("SystemAPI.Query<TileAspect>() count:" + i);
19.  
20.         int j = 0;
21.         foreach (var tile in SystemAPI.Query<DynamicBuffer<UnitOnTile>>()){
22.                 j++;}
23.         Debug.Log("SystemAPI.Query<DynamicBuffer<UnitOnTile>> count:" + j);
24. }

Output:

 

Thanks for the reply, but that is making the buffer enabeable, not actually making it optional in the aspect.
This means, not only that the chunk will internally track if the buffer is enabled or not in the underlying implementation of DOTS (which may or may not increase memory consumption and CPU cost in other tasks, no idea), but this requires adding an `IEnableableComponent` to the buffer element type, so if I'm not the owner of that type, then I can't make it optional in the aspect. So I can for example put optional buffers from third-party libraries over which I have no control in their source code.