@Override public String leaveDTD(){
  if (_writer == _dtdWriter) {
    _line.append(_text);
    _text=new StringBuffer(20);
    flushLine(false);
    _writer=_docWriter;
    return _dtdWriter.toString();
  }
  return null;
}

@ Override public String leaveDTD ( ) { if ( _writer == _dtdWriter ) { _line . append ( _text ) ; _text = new StringBuffer ( 20 ) ; flushLine ( false ) ; _writer = _docWriter ; return _dtdWriter . toString ( ) ; } return null ; }
called by the root element to leave dtd mode and if any dtd parts were printer , will return a string with their textual content .
