public void uploadImages(String caseId, List<de.bohnenkamp.shopapp.data.model.warranty.Picture> picturesList) {
        if(isViewAttached()){
            getView().showLoading(true);
        }

        Disposable d =
                LoginManager.getCredentials(application)
                        .flatMap(credentials ->  {

                            List<Completable> completables = new ArrayList<>();
                            for(de.bohnenkamp.shopapp.data.model.warranty.Picture pic : picturesList) {
                                completables.add(warrantyManager.uploadNewImageToWarranty(application, caseId, pic.getId(), pic.getUrl(), credentials.getPassword())
                                        .doOnError(new Consumer<Throwable>() {
                                            @Override
                                            public void accept(@NonNull Throwable throwable) throws Exception {
                                                Log.d("debug", "onError:" + throwable.getLocalizedMessage());
                                                throwable.printStackTrace();
                                            }
                                        })
                                        .onErrorComplete());
                            }

                            return Completable.concat(completables);
                        })
                        .observeOn(AndroidSchedulers.mainThread())
                        .subscribeWith(new DisposableCompletableObserver() {
                            @Override
                            public void onComplete() {
                                if(isViewAttached()) {
                                    getView().onFinishedSaveWarrantyCase(true, true);
                                }
                            }

                            @Override
                            public void onError(Throwable e) {
                                e.printStackTrace();
                                if(isViewAttached()){
                                    getView().showError(e, false);
                                }
                            }
                        });


        compositeDisposable.add(d);
    }