docs: public static Pair<InMemoryJarfile, String> loadAndUpgradeCatalogFromJar(byte[] catalogBytes, boolean isXDCR)
          throws IOException
      {
          // Throws IOException on load failure.
          InMemoryJarfile jarfile = loadInMemoryJarFile(catalogBytes);
  
          return loadAndUpgradeCatalogFromJar(jarfile, isXDCR);
      }