private @NotNull ClasspathCache.LoaderDataBuilder computePackageIndex() {
    ClasspathCache.LoaderDataBuilder builder = new ClasspathCache.LoaderDataBuilder();
    for (ImmutableZipEntry entry : ((HashMapZipFile)zipFile).getRawNameSet()) {
      if (entry != null) {
        builder.addPackageFromName(entry.name);
      }
    }
    return builder;
  }
private @NotNull ClasspathCache.LoaderDataBuilder computePackageIndex()