protected override void UpdateContainedPairs()
{
compoundInfo.hierarchy.Tree.GetOverlaps(compoundInfoB.hierarchy.Tree, overlappedElements);
for (int i = 0; i < overlappedElements.Count; i++)
{
var element = overlappedElements.Elements[i];
TryToAdd(element.OverlapA.CollisionInformation, element.OverlapB.CollisionInformation,
element.OverlapA.Material, element.OverlapB.Material);
}
overlappedElements.Clear();
}