public function trace() {
        $tracingLinks = array_merge(
            $this->getGeneratorElements("trace"),
            $this->getAllGenerators()["runtime"]->traceRuntimeCalls($this->generateFiles(), $this->productLine)
        );
        $tracingLinks = fphp\Helper\_Array::sortByKey($tracingLinks, "getFeatureName");
        return $tracingLinks;
    }