code: public function build(RouteMatchInterface $route_match) {
      $breadcrumb = new Breadcrumb();
      $breadcrumb->addCacheContexts(['route']);
  
      // Add all parent forums to breadcrumbs.
      /** @var Node $node */
      $node = $route_match->getParameter('node');
      $breadcrumb->addCacheableDependency($node);
  
      // Add all parent forums to breadcrumbs.
      /** @var \Drupal\Taxonomy\TermInterface $term */
      $term = !(empty($node->field_channel)) ? $node->field_channel->entity : '';
  
      $links = [];
      if ($term) {
        $breadcrumb->addCacheableDependency($term);
  
        $channels = $this->termStorage->loadAllParents($term->id());
        foreach (array_reverse($channels) as $term) {
          $term = $this->entityRepository->getTranslationFromContext($term);
          $breadcrumb->addCacheableDependency($term);
          $links[] = Link::createFromRoute($term->getName(), 'entity.taxonomy_term.canonical', ['taxonomy_term' => $term->id()]);
        }
      }
      if (!$links || '/' . $links[0]->getUrl()->getInternalPath() != $this->configFactory->get('system.site')->get('page.front')) {
        array_unshift($links, Link::createFromRoute($this->t('Home'), '<front>'));
      }
  
      return $breadcrumb->setLinks($links);
    }
docs: {@inheritdoc}