code: public synchronized void recordBreadcrumb(Breadcrumb breadcrumb) {
          if (breadcrumbs == null) {
              breadcrumbs = new CircularFifoQueue<>(breadcrumbLimit);
          }
  
          breadcrumbs.add(breadcrumb);
      }
docs: Record a single {@link Breadcrumb} into this context.
  
  @param breadcrumb Breadcrumb object to record