retrofit2 with rxjava

x.java

 //[.....]
 public void something(String something) {
    mSignUpSubscription = mUserService.
            create(User.create(something)).
            subscribeOn(Schedulers.io()).
            observeOn(AndroidSchedulers.mainThread()).
            subscribe(new Subscriber<User>() {

      @Override
      public void onStart() {
          Timber.i("Init");
          mView.showProgress();
      }

      @Override
      public void onCompleted() {
          Timber.d("Done");
          mView.hideProgress();
      }

      @Override
      public void onError(Throwable e) {
          mView.hideProgress();
          // Do something...
      }

      @Override
      public void onNext(User user) {
          // ok
      }
  });
 }
 //[....]