class MaterialDesignIcons {

  @NotNull
  @VisibleForTesting
  static Collection<String> getCategoriesFromJar(@NotNull ZipFile jar) {
    return jar.stream()
        .map(MaterialDesignIcons::getCategory)
        .filter(Objects::nonNull)
        .sorted()
        .collect(Collectors.toList());
  }

  private  MaterialDesignIcons();

}