Nette\DI\Config\Loader::getSection PHP Метод

    private function getSection(array $data, $key, $file)
    {
        Validators::assertField($data, $key, 'array|null', "section '%' in file '{$file}'");
        $item = $data[$key];
        if ($parent = Helpers::takeParent($item)) {
            $item = Helpers::merge($item, $this->getSection($data, $parent, $file));
        }
        return $item;
    }