private int countStripeMarkers(@NotNull ErrorStripeRangeMarkerTree tree) {
    AtomicInteger counter = new AtomicInteger();
    tree.processAll(marker -> {
      if (isAvailable(marker.getHighlighter(), true)) {
        counter.incrementAndGet();
      }
      return true;
    });
    return counter.get();
  }
private int countStripeMarkers(@NotNull ErrorStripeRangeMarkerTree tree)