Hydra 2.0 Instance Selection

I’m trying to select a subset of the instances in a PointInstancer. I see there is the method

UsdImagingGLEngine::AddSelected(SdfPath const &path, int instanceIndex), but looking at the code the instanceIndex is not taken into account if scene indices are being used.

Does it mean that selecting individual instances in a point instancer is not fully supported in Hydra 2.0 or is there any other way to handle that?