int32 SplitIslands ( [FGeometryCollection](API\Runtime\Chaos\GeometryCollection\FGeometryCollection) & Collection, const [TArrayView](API\Runtime\Core\Containers\TArrayView)< const int32 > & TransformIndices, double CollisionSampleSpacing, [FProgressCancel](API\Runtime\GeometryCore\Util\FProgressCancel) * Progress )