Ojs\JournalBundle\Entity\Journal::setLanguageCodeSet PHP Method

    public function setLanguageCodeSet($languages)
    {
        $langIds = [];
        /** @var Lang $language */
        foreach ($languages as $language) {
            $langIds[] = $language->getCode();
        }
        $this->languageCodeSet = implode('-', $langIds);
        return $this;
    }