src/Form/Extension/Conversation/Type/FormTypeConversationExtension.php
public function finishView(FormView $view, FormInterface $conversationForm, array $options)
    {
        $conversation = $this->conversationContext->getConversation();
        if ($conversation !== null && !$view->parent && $options['compound']) {
            $conversationForm = $conversationForm->getConfig()->getAttribute('conversation_factory')->createNamed(
                $this->conversationContext->getConversationParameterName(),
                'Symfony\Component\Form\Extension\Core\Type\HiddenType',
                $conversation->getConversationId(),
                array('mapped' => false)
            );

            $conversationFormView = $conversationForm->createView($view);
            $conversationFormView->vars['full_name'] = $this->conversationContext->getConversationParameterName();
            $view->children[$this->conversationContext->getConversationParameterName()] = $conversationFormView;
        }
    }
public function finishView(FormView $view, FormInterface $conversationForm, array $options)
    {
        $conversation = $this->conversationContext->getConversation();
        if ($conversation !== null && !$view->parent && $options['compound']) {
            $conversationForm = $conversationForm->getConfig()->getAttribute('conversation_factory')->createNamed(
                $this->conversationContext->getConversationParameterName(),
                'Symfony\Component\Form\Extension\Core\Type\HiddenType',
                $conversation->getConversationId(),
                array('mapped' => false)
            );

            $conversationFormView = $conversationForm->createView($view);
            $conversationFormView->vars['full_name'] = $this->conversationContext->getConversationParameterName();
            $view->children[$this->conversationContext->getConversationParameterName()] = $conversationFormView;
        }
    }
{@inheritdoc}