code: protected static void sendUnavailableException(IRequest req, IResponse res) throws IOException {
  
          if (com.ibm.ejs.ras.TraceComponent.isAnyTracingEnabled() && logger.isLoggable(Level.FINE)) //306998.15
              logger.logp(Level.FINE, CLASS_NAME, "sendUnavailableException", "Inside sendUnavailableException");
          res.addHeader("Content-Type", "text/html");
          res.setStatusCode(503);
          //Translated to SRVE0095I: Servlet has become temporarily unavailable for service: {0}
          String formattedMessage = nls.getFormattedMessage("Servlet.has.become.temporarily.unavailable.for.service:.{0}", new Object[] { truncateURI(req.getRequestURI()) },
                          "Servlet has become temporarily unavailable for service");
          
          String output = "<H1>"
                          + formattedMessage
                          + "</H1><BR>";
  
          byte[] outBytes = output.getBytes();
          res.getOutputStream().write(outBytes, 0, outBytes.length);
  
          logger.logp(Level.SEVERE, CLASS_NAME, "sendUnavailableException", formattedMessage );
      }
docs: 582053 change it to protected from private