Neos\FluidAdaptor\ViewHelpers\FlashMessagesViewHelper::renderFromTemplate PHP Метод

    protected function renderFromTemplate(array $flashMessages, $as)
    {
        $templateVariableContainer = $this->renderingContext->getVariableProvider();
        $templateVariableContainer->add($as, $flashMessages);
        $content = $this->renderChildren();
        $templateVariableContainer->remove($as);
        return $content;
    }