return cb.append("_").flip().toString();  //$NON-NLS-1$
  }
    public static SQLXML jsonToXml(CommandContext context, final String rootName, final Blob json) throws TeiidComponentException, TeiidProcessingException, SQLException, IOException {
    InputStream is = json.getBinaryStream();
    PushbackInputStream pStream = new PushbackInputStream(is, 4);
    byte[] encoding = new byte[3];
    int read = pStream.read(encoding);
    pStream.unread(encoding, 0, read);
    Charset charset = UTF_8;
    if (read > 2) {
      if (encoding[0] == 0) {
        if (encoding[1] == 0) {
          charset = UTF_32BE;