private static @Nullable @Nls String generateExternalJavadoc(@NotNull JavaDocInfoGenerator generator, @Nullable List<String> docURLs) {
    return JavaDocExternalFilter.filterInternalDocInfo(generator.generateDocInfo(docURLs));
  }
private static @Nullable @Nls String generateExternalJavadoc(@NotNull JavaDocInfoGenerator generator, @Nullable List<String> docURLs)