code: @Override
    public void registerLoggerProviderKeeper(final LoggerProviderKeeper keeper) {
      if (this.loggerProviderKeeper != null) {
        this.loggerProviderKeeper.close();
      }
      this.loggerProviderKeeper = keeper;
    }
docs: Registers the {@code LoggerProviderKeeper} plugin.
  @param keeper the {@code LoggerProviderKeeper} to register