code: @Override
  	protected void doGet(HttpServletRequest request,
  			HttpServletResponse response) throws ServletException, IOException {
  		long start = System.nanoTime();
  		ProcessRetrieveResponse responseObject = ProcessRetrieveRequest.checkRequestParameter(request,
  				this.getServletContext());
  		String resultJson = responseObject.buildJsonResonse();
  		response.setContentType("application/json"); 
  		PrintWriter out = response.getWriter();
  		long end = System.nanoTime();
  		//+ " " + (end - start)/1000 + " micro seconds"
  		out.println(resultJson);
  		out.flush();
  	}
docs: de.metalcon.autocompleteServer.Retrieve.RetrieveServlet
  @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
  response)