private function buildMarkers(SimpleXMLElement $phpDocumentor): array
    {
        if ((array) $phpDocumentor->parser === []) {
            return $this->markers;
        }

        if ((array) $phpDocumentor->parser->markers === []) {
            return $this->markers;
        }

        return $this->buildArrayFromNode($phpDocumentor->parser->markers);
    }