code: public synchronized List<Breadcrumb> getBreadcrumbs() {
          if (breadcrumbs == null || breadcrumbs.isEmpty()) {
              return Collections.emptyList();
          }
  
          List<Breadcrumb> copyList = new ArrayList<>(breadcrumbs.size());
          copyList.addAll(breadcrumbs);
          return copyList;
      }
docs: Return {@link Breadcrumb}s attached to this context.
  
  @return List of {@link Breadcrumb}s.