* @param inputstream
   */
  public static void unreadCharacter(char ch, InputStream inputstream) {
    if (inputstream.tokenizerState != null) {
      Stella.unreadCharacterFromTokenizerBuffer(ch, inputstream);
    }
    else {
      { PushbackBufferedReader reader = inputstream.nativeStream;

        Native.unreadCharacter(ch, reader);
      }
    }
  }