if (i == 2) {
        // Force this request's response to be written to the cache. This way, subsequent responses
        // can be read from the cache.
        System.out.println("Force cache: true");
        clientForCall = client.newBuilder()
            .addNetworkInterceptor(REWRITE_CACHE_CONTROL_INTERCEPTOR)
            .build();
      } else {
        System.out.println("Force cache: false");

    Request request = new Request.Builder()
        .url("https://publicobject.com/helloworld.txt")
        .build();

    final ProgressListener progressListener = new ProgressListener() {
      boolean firstUpdate = true;

      @Override public void update(long bytesRead, long contentLength, boolean done) {
        if (done) {
          System.out.println("completed");
        } else {
          if (firstUpdate) {

      this.endpoint = (InetSocketAddress) endpoint;

      UnixSocketAddress address = new UnixSocketAddress(path);
      serverSocketChannel = UnixServerSocketChannel.open();
      serverSocketChannel.configureBlocking(true);
      serverSocketChannel.socket().bind(address);
    }

    @Override public int getLocalPort() {
      return 1; // A white lie. There is no local port.
    }

        + "usergroups:read usergroups:write users:read users:write identify";

    if (true) {
      client.requestOauthSession(scopes, null);
    } else {
      OAuthSession session = new OAuthSession(true,
          "xoxp-XXXXXXXXXX-XXXXXXXXXX-XXXXXXXXXXX-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
          scopes, "UXXXXXXXX", "My Slack Group", "TXXXXXXXX");