docs: private void logWarningIfLegacyFaceletViewHandlerIsPresent(FacesContext context)
      {
          boolean facelets1ViewHandlerPresent
                  = context.getApplication().getViewHandler().getClass().getName().equals(FACELETS_1_VIEW_HANDLER);
  
          if (facelets1ViewHandlerPresent)
          {
              if (LOGGER.isLoggable(Level.WARNING))
              {
                  LOGGER.log(Level.WARNING, "Your faces-config.xml contains the " + FACELETS_1_VIEW_HANDLER + " class."
                      + "\nYou need to remove it since you have not disabled the \"new\" Facelets-2 version with the "
                      + PARAM_DISABLE_JSF_FACELET + " context parameter");
              }
          }
      }