public List<ExtRepositoryFileVersionAdapter> getExtRepositoryFileVersionAdapters(
      ExtRepositoryFileEntryAdapter extRepositoryFileEntryAdapter) throws PortalException {

    List<ExtRepositoryFileVersion> extRepositoryFileVersions =
        _extRepository.getExtRepositoryFileVersions(
            extRepositoryFileEntryAdapter.getExtRepositoryModel());

    return _toExtRepositoryFileVersionAdapters(
        extRepositoryFileEntryAdapter, extRepositoryFileVersions);
  }
  public InputStream getContentStream(ExtRepositoryFileEntryAdapter extRepositoryFileEntryAdapter)
      throws PortalException {

    return _extRepository.getContentStream(extRepositoryFileEntryAdapter.getExtRepositoryModel());
  }