throw new UnimplementedException("export");
try {  WriteStream writeStream = file.openWrite();  if (_lob instanceof Blob) { Blob blob = (Blob) _lob; InputStream is = blob.getBinaryStream(); is.skip(start); writeStream.writeStream(is); is.close(); } else if (_lob instanceof Clob) { Clob clob = (Clob) _lob; Reader reader = clob.getCharacterStream(); reader.skip(start); writeStream.writeStream(reader); reader.close(); } else { writeStream.close(); return false; }  writeStream.close(); return true;  } catch (Exception ex) { log.log(Level.FINE, ex.toString(), ex); return false; }
  public boolean export(Env env,                        String fileName,                        @Optional("0") int start,                        @Optional("-1") int length)  {    throw new UnimplementedException("export");  }