public @NotNull SortedSet<String> getVendors() {
    if (ContainerUtil.isEmpty(myVendors)) {
      Map<String, Integer> vendorsCount = getVendorsCount(getInstalledDescriptors());
      myVendors = new TreeSet<>((v1, v2) -> {
        int result = vendorsCount.get(v2) - vendorsCount.get(v1);
        return result == 0 ? v2.compareToIgnoreCase(v1) : result;
      });
      myVendors.addAll(vendorsCount.keySet());
    }
    return Collections.unmodifiableSortedSet(myVendors);
  }
public @NotNull SortedSet<String> getVendors()