getClient().newCall(request).enqueue(new Callback() {
                    @Override
                    public void onFailure(Call call, IOException e) {

                    }

                    @Override
                    public void onResponse(Call call, Response response) throws IOException {
                    }
});

/**
   * Prepares the {@code request} to be executed at some point in the future.
   */
  @Override public Call newCall(Request request) {
    return new RealCall(this, request);
  }

@Override public void enqueue(Callback responseCallback) {
    enqueue(responseCallback, false);
  }

  void enqueue(Callback responseCallback, boolean forWebSocket) {
    synchronized (this) {
      if (executed) throw new IllegalStateException("Already Executed");
      executed = true;
    }
    client.dispatcher().enqueue(new AsyncCall(responseCallback, forWebSocket));
  }