public static @Nullable List<String> findUrlForPackage(@NotNull PsiPackage aPackage) {
    String qName = aPackage.getQualifiedName().replace('.', '/') + '/' + PACKAGE_SUMMARY_FILE;
    for (PsiDirectory directory : aPackage.getDirectories()) {
      List<String> url = findUrlForVirtualFile(aPackage.getProject(), directory.getVirtualFile(), qName);
      if (url != null) {
        return url;
      }
    }

    return null;
  }
public static @Nullable List<String> findUrlForPackage(@NotNull PsiPackage aPackage)