queue.add(link.newBuilder().fragment(null).build());
      }
    }
  }

  public static void main(String[] args) throws IOException {
    if (args.length != 2) {
      System.out.println("Usage: Crawler <cache dir> <root>");
      return;
    }

    int threadCount = 20;
    long cacheByteCount = 1024L * 1024L * 100L;

    Cache cache = new Cache(new File(args[0]), cacheByteCount);

        @Option(name = "-s", aliases = "--sessionId", metaVar = "sessionId", usage = "Session ID")
        public String sessionId;

        @Option(name = "-n", aliases = "--name", metaVar = "name", usage = "Name")
        public String name;

        @Option(name = "-w", aliases = "--webConfigIds", metaVar = "webConfigIds", usage = "Web Config IDs")
        public String webConfigIds;