private static IList<CollectorEnv.LocationInfo> CollectPointsOfInterest
(IVwRootBox rootBox, Func<int, PointsOfInterestCollectorEnv> collectorFactory)
{
int hvoRoot;
int fragRoot;
IVwViewConstructor vc;
IVwStylesheet ss;
rootBox.GetRootObject(out hvoRoot, out vc, out fragRoot, out ss);
var collector = collectorFactory.Invoke(hvoRoot);
vc.Display(collector, hvoRoot, fragRoot);
return collector.PointsOfInterest;
}
