/**
 * Builder class to create a request.
 *
 * @author shinsuke
 *
 */
public final class RequestDataBuilder {
    private RequestDataBuilder() {
    }

    public static RequestDataContext newRequestData() {
        return new RequestDataContext();
    }

    public static class RequestDataContext {
        private final RequestData data;

        private RequestDataContext() {

            for (final Sitemap sitemap : sitemapSet.getSitemaps()) {
                if (sitemap != null) {
                    requestDataSet.add(RequestDataBuilder.newRequestData().get().url(sitemap.getLoc()).build());
                }
            }
            throw new ChildUrlsException(requestDataSet, this.getClass().getName() + "#process");
        } catch (final IOException e) {