public static void addTourCommit(TourCommit commit) {
        commits.add(commit);

        if (commit.getVersion() % PERIOD == 0) {
            AsyncTask<Void, Void, Void> saveCommitsAsyncTask = new AsyncTask<Void, Void, Void>() {
                @Override
                protected Void doInBackground(Void... params) {
                    for (TourCommit item : commits) {
                        try {
                            item.save();
                        } catch (ParseException e) {
                            e.printStackTrace();
                        }
                    }
                    return null;
                }

                @Override
                protected void onPostExecute(Void aVoid) {
                    super.onPostExecute(aVoid);
                    commits.clear();
                }
            };
            saveCommitsAsyncTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
            Log.d("TEST", String.valueOf(commits.size()));
        }
    }