docs: private static ImmutableSet<String> readDelTemplatesFromMetaInf(ClassLoader loader) {
      try {
        ImmutableSet.Builder<String> builder = ImmutableSet.builder();
        Enumeration<URL> resources = loader.getResources(Names.META_INF_DELTEMPLATE_PATH);
        while (resources.hasMoreElements()) {
          URL url = resources.nextElement();
          try (InputStream in = url.openStream()) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(in, UTF_8));
            for (String line = reader.readLine(); line != null; line = reader.readLine()) {
              builder.add(line);
            }
          }
        }
        return builder.build();
      } catch (IOException iox) {
        throw new RuntimeException("Unable to read deltemplate listing", iox);
      }
    }