public static ByteArrayDataOutput newDataOutput(ByteArrayOutputStream byteArrayOutputStream) {
    return new ByteArrayDataOutputStream(checkNotNull(byteArrayOutputStream));
  }

  @J2ktIncompatible
  private static final class ByteArrayDataOutputStream implements ByteArrayDataOutput {

    final DataOutput output;
    final ByteArrayOutputStream byteArrayOutputStream;

    }

    private static String readFully(InputStream inputStream) throws IOException {
        try (InputStream in = inputStream; ByteArrayOutputStream out = new ByteArrayOutputStream()) {
            byte[] buffer = new byte[8192];
            int read;
            while ((read = in.read(buffer)) >= 0) {
                out.write(buffer, 0, read);
            }

     */
    public String encodeSimilarDocHash(final String hash) {
        if (hash != null && !hash.startsWith(SIMILAR_DOC_HASH_PREFIX)) {
            try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
                try (GZIPOutputStream gos = new GZIPOutputStream(baos)) {
                    gos.write(hash.getBytes(Constants.UTF_8));
                }