List<RequestData> urlList = new ArrayList<>();

        urlList = fessXpathTransformer.convertChildUrlList(urlList);
        assertEquals(0, urlList.size());

        urlList.clear();
        urlList.add(RequestDataBuilder.newRequestData().get().url("http://www.example.com").build());
        urlList = fessXpathTransformer.convertChildUrlList(urlList);
        assertEquals(1, urlList.size());

                    anchorList.add(RequestDataBuilder.newRequestData().get().url(u).build());
                }
            }
            anchorList = convertChildUrlList(anchorList);
        } catch (final Exception e) {
            logger.warn("Could not parse anchor tags.", e);
        }

        final List<String> urlList = new ArrayList<>(anchorList.size());