code: public void processingInstruction(String target, String data)
          throws SAXException
      {
          if (m_firstTagNotEmitted)
          {
              flush();
          }
  
          m_handler.processingInstruction(target, data);
      }
docs: Pass the call on to the underlying handler
  @see org.xml.sax.ContentHandler#processingInstruction(String, String)