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

    client.awaitAccessToken(Timeout.NONE);