Neos\Neos\Ui\TypoScript\Helper\NodeInfoHelper::buildNodeProperties PHP Method

    private function buildNodeProperties(NodeInterface $node)
    {
        $encodedProperties = [];
        foreach ($node->getNodeType()->getProperties() as $propertyName => $propertyConfiguration) {
            if (substr($propertyName, 0, 2) === '__') {
                // skip fully-private properties
                continue;
            }
            /** @var $contentContext ContentContext */
            $contentContext = $node->getContext();
            if ($propertyName === '_name' && $node === $contentContext->getCurrentSiteNode()) {
                // skip the node name of the site node
                continue;
            }
            if ($propertyName === '_nodeType') {
                // skip the node type as it is handled separately
                continue;
            }
            // Serialize objects to JSON strings
            $dataType = isset($propertyConfiguration['type']) ? $propertyConfiguration['type'] : 'string';
            $encodedProperties[$propertyName] = $this->buildNodeProperty($node, $propertyName, $dataType);
        }
        return $encodedProperties;
    }