rule.setRuleId("sitemapsRule");
                    rule.addRule("url", ".*sitemap.*");
                })//
                .<DefaultResponseProcessor> singleton("defaultResponseProcessor", DefaultResponseProcessor.class, processor -> {
                    processor.setTransformer(container.getComponent("fileTransformer"));
                    processor.setSuccessfulHttpCodes(new int[] { 200 });

            if (!(responseProcessor instanceof DefaultResponseProcessor)) {
                throw new CrawlingAccessException("The response processor is not DefaultResponseProcessor. responseProcessor: "
                        + responseProcessor + ", url: " + url);
            }
            final Transformer transformer = ((DefaultResponseProcessor) responseProcessor).getTransformer();

                final ResponseProcessor responseProcessor = rule.getResponseProcessor();
                if (responseProcessor instanceof DefaultResponseProcessor) {
                    final Transformer transformer = ((DefaultResponseProcessor) responseProcessor).getTransformer();
                    final ResultData resultData = transformer.transform(responseData);

                         ← DataService ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ←
```

**Rule**: Pattern-based response routing (`RegexRule`, `SitemapsRule`)
**ResponseProcessor**: `DefaultResponseProcessor`, `SitemapsResponseProcessor`, `NullResponseProcessor`
**Transformer**: `HtmlTransformer`, `XmlTransformer`, `FileTransformer`, etc.
**Extractor**: Weight-based selection (tries in descending weight order)