cross-solution / YAWIK

     */

    public function getForm($key, $asInstance = true)

    {

        if (false !== strpos($key, '.')) {

            list($key, $childKey) = explode('.', $key, 2);

            $container = $this->getForm($key);

            return $container->getForm($childKey);

        }

        if (!isset($this->forms[$key])) {

            return null;

     */

    public function executeAction($name, array $data = [])

    {

        if (false !== strpos($name, '.')) {

            list($name, $childKey) = explode('.', $name, 2);

            $container = $this->getForm($name);

            // execute child container's action

            return $container->executeAction($childKey, $data);

        }

        // this container defines no actions

        return [];