static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * SetPolygroupForMeshSelection ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, [FGeometryScriptGroupLayer](API\Plugins\GeometryScriptingCore\GeometryScript\FGeometryScriptGroupLayer) GroupLayer, [FGeometryScriptMeshSelection](API\Plugins\GeometryScriptingCore\GeometryScript\FGeometryScriptMeshSelection) Selection, int & SetPolygroupIDOut, int SetPolygroupID, bool bGenerateNewPolygroup, bool bDeferChangeNotifications )