private char literalReadCh()
private int literalReadCh(boolean recognizePEs)
  private char literalReadCh()    throws IOException, XMLStreamException  {    char c = readCh();    while (c == '\uffff')      {        if (inputStack.size() > 1)          {            inputStack.removeLast();            input = (Input) inputStack.getLast();            // Don't issue end-entity            c = readCh();          }        else          throw new EOFException();      }    return c;  }