resolveChildren example

        return isset($this->unresolvedChildren[$name]) || isset($this->children[$name]);
    }

    public function all(): array
    {
        if ($this->locked) {
            throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
        }

        $this->resolveChildren();

        return $this->children;
    }

    public function count(): int
    {
        if ($this->locked) {
            throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
        }

        return \count($this->children);
    }

    /** * {@inheritdoc} */
    public function getList(array $ids, ShopContextInterface $context)
    {
        $shopPages = $this->shopPageGateway->getList($ids, $context);

        $this->resolveShops($shopPages);
        $this->resolveParents($shopPages, $context);
        $this->resolveChildren($shopPages, $context);

        return $shopPages;
    }

    /** * @param array<int, ShopPage> $shopPages */
    private function resolveShops(array $shopPages): void
    {
        $shopIds = [];
        foreach ($shopPages as $page) {