code: private void addRootFileSeed(URI baseUri, String fileName) {
  		String seed = buildUri(baseUri.getScheme(), baseUri.getRawHost(), baseUri.getPort(), "/" + fileName);
  		try {
  			this.seedList.add(new URI(seed, true));
  		} catch (Exception e) {
  			log.warn("Error while creating [" + fileName + "] seed: " + seed, e);
  		}
  	}
docs: Adds a file seed, with the given file name, at the root of the base URI.
  <p>
  For example, with base URI as {@code http://example.com/some/path/file.html} and file name as {@code sitemap.xml} it's
  added the seed {@code http://example.com/sitemap.xml}.
  
  @param baseUri the base URI.
  @param fileName the file name.