docs: private void attachFormDataBody(final HttpServerExchange exchange) throws IOException {
          Object data;
          FormParserFactory formParserFactory = FormParserFactory.builder().build();
          FormDataParser parser = formParserFactory.createParser(exchange);
          if (parser != null) {
              FormData formData = parser.parseBlocking();
              data = BodyConverter.convert(formData);
              exchange.putAttachment(REQUEST_BODY, data);
          }
      }