private String writeToRealm(WeatherResponse weatherResponse) {
    Realm realm = Realm.getDefaultInstance();
    realm.executeTransaction(transactionRealm -> {
        WeatherRealm weatherRealm = findInRealm(transactionRealm, weatherResponse.getName());
        if (weatherRealm == null)
            weatherRealm = transactionRealm.createObject(WeatherRealm.class, weatherResponse.getName());
        weatherRealm.setTemp(weatherResponse.getMain().getTemp());
    });
    realm.close();
    return weatherResponse.getName();
}