code: public void processingInstruction(
            StylesheetHandler handler, String target, String data)
              throws org.xml.sax.SAXException
    {
  
      // no op
    }
docs: Receive notification of a processing instruction.
  
  
  @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
  @param target The processing instruction target.
  @param data The processing instruction data, or null if
  none is supplied.