ServiciosAdicionales sa = new ServiciosAdicionales();

        String json = "";

        GestorServicios gestorServicios = GestorServicios.getInstance();

        gestorServicios.mostrarServicios();

        GenericResponse serviciosResponse = new GenericResponse("OK","");

        response.setContentType("application/json");
        PrintWriter out = response.getWriter();
        out.print(json);