bool ExtractBoundaryLoops ( const [TSet](API\Runtime\Core\Containers\TSet)< int > & OnCutEdges, const [TSet](API\Runtime\Core\Containers\TSet)< int > & ZeroEdges, [FMeshPlaneCut::FOpenBoundary](API\Plugins\DynamicMesh\Operations\FMeshPlaneCut\FOpenBoundary) & Boundary )