docs: @SuppressWarnings("unchecked")
    public final Cache2kBuilder<K, V> wrappingLoader(AdvancedCacheLoader<K, LoadDetail<V>> l) {
      config().setAdvancedLoader((
        CustomizationSupplier<AdvancedCacheLoader<K, V>>) (Object) wrapCustomizationInstance(l));
      return this;
    }