GraphAware\Neo4j\Client\Formatter\RecordView::nodeValue PHP Метод

    public function nodeValue($key)
    {
        if (!$this->hasValue($key) || !$this->value($key) instanceof Node) {
            throw new \InvalidArgumentException(sprintf('value for %s is not of type %s', $key, Node::class));
        }
        return $this->value($key);
    }