else if (c == '\uffff') { if (inputStack.size() > 1) popInput(); else throw new EOFException(); }
  private boolean tryWhitespace()    throws IOException, XMLStreamException  {    boolean white;    boolean ret = false;    do      {        mark(1);        char c = readCh();        white = (c == ' ' || c == '\t' || c == '\n' || c == '\r');        if (white)          ret = true;        else if (c == '\uffff')          {            if (inputStack.size() > 1)              popInput();            else          throw new EOFException();      }      }    while (white);    reset();    return ret;  }