while (c == '\uffff' && inputStack.size() > 1) { popInput(); c = readCh(); }
  private void skipWhitespace()    throws IOException, XMLStreamException  {    boolean white;    do      {        mark(1);        char c = readCh();        white = (c == ' ' || c == '\t' || c == '\n' || c == '\r');      }    while (white);    reset();  }