static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * GetTriangleNormals ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, int32 TriangleID, FVector & Normal1, FVector & Normal2, FVector & Normal3, bool & bTriHasValidNormals )