Neos\Flow\Persistence\Generic\Backend\AbstractBackend::processNestedArray PHP Метод

    protected function processNestedArray($parentIdentifier, array $nestedArray, \Closure $handler = null)
    {
        $identifier = uniqid('a', true);
        $data = ['multivalue' => true, 'value' => $this->processArray($nestedArray, $parentIdentifier)];
        if ($handler instanceof \Closure) {
            $handler($parentIdentifier, $identifier, $data);
        }
        return $identifier;
    }