Fhaculty\Graph\Tests\GraphTest::testEdgesFailParallel PHP Метод

    public function testEdgesFailParallel()
    {
        // 1 -> 2, 1 -> 2
        $graph = new Graph();
        $v1 = $graph->createVertex(1);
        $v2 = $graph->createVertex(2);
        $e1 = $v1->createEdgeTo($v2);
        $e2 = $v1->createEdgeTo($v2);
        // which one to return? e1? e2?
        $graph->getEdgeClone($e1);
    }