private function createBreadcrumbRoot()
    {
        if (null === $this->breadcrumb) {
            if (null === $home = $this->pageHelper->getHomePage()) {
                throw new \RuntimeException('Home page not found.');
            }
            $this->breadcrumb = $this->factory->createItem('root', [
                'childrenAttributes' => [
                    'class' => 'breadcrumb hidden-xs',
                ],
            ]);
            $this->tagManager->addTags($home->getEntityTag());
        }
    }