[Connect C++] Query properties of a GroupedHole element

I would like to query the properties of a GroupedHole element. I think I need to use the GroupedHoleHandler and so far I got this:

if (GroupedHoleHandler::IsGroupedHole(eh))
{
	GroupedHoleHandler::GetInstance().QueryProperties(eh, ???);
}

The second parameter to the QueryProperties method is a PropertyContextR. How do I create this ? I've spent some time on looking through the documentation but I didn't find a solution.

Regards, Evan