docs: public void registerServlet (@Nonnull final Class <? extends Servlet> aServletClass,
                                 @Nonnull @Nonempty final String sServletPath,
                                 @Nonnull @Nonempty final String sServletName)
    {
      registerServlet (aServletClass, sServletPath, sServletName, (Map <String, String>) null);
    }