static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * GetAllTriangleMaterialIDs ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, [FGeometryScriptIndexList](API\Plugins\GeometryScriptingCore\GeometryScript\FGeometryScriptIndexList) & MaterialIDList, bool & bHasMaterialIDs )