protected function fillItem(Item $item, Item $new_item, $field)
    {
        switch ($field) {
            case self::FIELD_COUNTRY:
                $item->setCountry($new_item->getCountry());
                break;
            case self::FIELD_DATE_END:
                $item->setDateEnd($new_item->getDateEnd());
                break;
            case self::FIELD_DATE_PREMIERE:
                $item->setDatePremiere($new_item->getDatePremiere());
                break;
            case self::FIELD_DURATION:
                $item->setDuration($new_item->getDuration());
                break;
            case self::FIELD_EPISODES:
                $item->setEpisodes($new_item->getEpisodes());
                break;
            case self::FIELD_EPISODES_NUMBER:
                $item->setEpisodesNumber($new_item->getEpisodesNumber());
                break;
            case self::FIELD_FILE_INFO:
                $item->setFileInfo($new_item->getFileInfo());
                break;
            case self::FIELD_GENRES:
                /* @var $new_genre \AnimeDb\Bundle\CatalogBundle\Entity\Genre */
                foreach ($new_item->getGenres() as $new_genre) {
                    $item->addGenre($new_genre);
                }
                break;
            case self::FIELD_NAMES:
                // set main name in top of names list
                $new_names = $new_item->getNames()->toArray();
                array_unshift($new_names, (new Name())->setName($new_item->getName()));
                foreach ($new_names as $new_name) {
                    $item->addName($new_name);
                }
                break;
            case self::FIELD_SOURCES:
                foreach ($new_item->getSources() as $new_source) {
                    $item->addSource($new_source);
                }
                break;
            case self::FIELD_STUDIO:
                $item->setStudio($new_item->getStudio());
                break;
            case self::FIELD_SUMMARY:
                $item->setSummary($new_item->getSummary());
                break;
        }

        return $item;
    }